Vũ Ngọc Phát


GS. TSKH. NCVCC

Phòng Tối ưu và điều khiển
Hướng nghiên cứu: Ổn định và điều khiển hệ động lực


Liên hệ
Phòng làm việc: 504, Nhà A6
Điện thoại: +84 (024) 38361121 / 504
Email: vnphat AT math.ac.vn

Lý lịch khoa học

  • Đại học: 1975, Azerbaijan State University, former USSR
  • Tiến sĩ: 1984, Azerbaijan State University, former USSR
  • Tiến sĩ khoa học: 1995, Institute of Mathematics, Polish Academy of Sciences, Warsaw, Poland
  • Phó giáo sư: 1992
  • Giáo sư: 2001


Hiệp hội tham gia

  • American Mathematical Society (AMS)
  • Society for Industrial and Applied Mathematíc (SIAM)
  • World Scientific and Engineering Society (WSES)
  • Mathematical Review (MR)
  • Steering Technical Committee of Nonlinear Control Theory (IFAC).


Thành viên ban biên tập tạp chí toán học

  • Optimization, 1998-2002
  • Journal of Applied Mathematics, 2010–2015
  • Mathematical Problems in Engineering, 2011-2014
  • Nonlinear Functional Analysis and Applications, 1999-2015
  • Advances in Nonlinear Variational Inequalities, 2003-
  • Acta Mathematica Vietnamica, 2008-
  • Vietnam Journal of Mathematics, 2011-
  • Thai Journal of Mathematics, 2006-
  • Journal of Computer Science and Cybernetics, 2018-

Các lĩnh vực quan tâm: Systems and control theory of differential-difference equations, singular systems, hybrid systems, fractional-order systems, positive systems.

DANH SÁCH CÔNG TRÌNH

Danh sách trong MathSciNet

Danh sách gần đây
1Nguyen T. Thanh, Vũ Ngọc Phát, Switching law design for finite-time stability of singular fractional-order systems with delay, IET Control Theory and Applications, 13(2019), 1367-1373, (SCI(-E), Scopus).
2Vũ Ngọc Phát, Mai Viet Thuan, Tran Ngoc Tuan, New Criteria for Guaranteed Cost Control of Nonlinear Fractional-Order Delay Systems: a Razumikhin Approach, Vietnam Journal of Mathematics, 47 (2019), 403–415, Scopus.
3Le Anh Tuan, Vũ Ngọc Phát, Existence of Solutions and Finite-Time Stability for Nonlinear Singular Discrete-Time Neural Networks, Bulletin of the Malaysian Mathematical Sciences Society, 42 (2019), 2423–2442, SCI-(E), Scopus.
4Vũ Ngọc Phát, Nguyen Huu Sau, Exponential stabilization of positive singular linear discrete-time delay systems with bounded control, IET Control Theory and Applications, 13 (2019), pp. 905 -911., SCI(-E); Scopus.
5N.H. Sau, Vũ Ngọc Phát, P. Niamsup, On finite-time stability of linear positive differential-algebraic delay equations, IEEE Transactions on Circuits and Systems II: Express Briefs, 65 (2018), 1984-1987, SCI-(E).
6Vũ Ngọc Phát, N.T. Thanh, New criteria for finite-time stability of nonlinear fractional-order delay systems: A Gronwall inequality approach. Appllied Mathematics Letters, 83 (2018), pp. 169-175, SCI(-E); Scopus.
7Nguyen Huu Sau, Vũ Ngọc Phát, LP approach to exponential stabilization of singular positive time-delay systems via memory state feedback, Journal of Industrial and Management Optimization, 14 (2018), 583-596, SCI(-E); Scopus.
8Phan Thanh Nam, Hieu Trinh, Pubudu Nishantha Pathirana, Vũ Ngọc Phát, Stability analysis of nonlinear time-delay systems using a novel switched positive systems method, IEEE Transactions on Automatic Control, 63 (2018), 291-297, SCI(-E); Scopus.
9Nguyễn Huyền Mười, Vũ Ngọc Phát, P. Niamsup, Criteria for robust finite-time stabilization of linear singular systems with interval time-varying delay, IET Control Theory and Applications, 11 (2017), 1968 - 1975,SCI(-E); Scopus.
10N.T. Thanh, P. Niamsup, Vũ Ngọc Phát, Finite-time stability of singular nonlinear switched time-delay systems: A singular value decomposition approach, Journal of the Franklin Institute, 354 (2017), 3502-3518, SCI(-E); Scopus.
11N.T. Thanh, H. Trinh, Vũ Ngọc Phát, Stability analysis of fractional differential  time-delay equations, IET Control Theory and Applications, 11 (2017), 1006-1015, SCI(-E); Scopus.
12P. Niamsup, N.T. Thanh, Vũ Ngọc Phát, Robust finite-time stabilization of nonlinear systems with multiple delays in states and controls, Communications on Applied Nonlinear Analysis, 23 (2016), 1-13, SCI(-E); Scopus.
13Nguyễn Huyền Mười, G. Rajchakit, Vũ Ngọc Phát, LMI approach to finite-time stability and stabilization of singular discrete delay systems, Acta Applicandae Mathematicae, 146(2016), 81-93,SCI(-E); Scopus.
14P.Niamsup, Vũ Ngọc Phát, Robust finite-time control for linear time-varying delay systems with bounded control, Asian Jounal of Control, 18 (2016), 2317-2324.
15Vũ Ngọc Phát, N.T. Thanh, H. Trinh, New results on $H_\infty$ filtering for nonlinear large-scale systems with interconnected time-varying delays, Optimal Control Applications and Methods, 37 (2016), 958-964, SCI(-E); Scopus.
16Nguyen H.Sau, P.Niamsup, Vũ Ngọc Phát, Positivity and stability analysis for linear implicit difference delay equations, Linear Algebra and its Applications, 510 (2016), 25–41, SCI(-E); Scopus.
17Le A. Tuan, Vũ Ngọc Phát, Robust finite-time stability and $H_\infty$ control of linear discrete-time delay systems with norm-bounded disturbances, Acta Mathematica Vietnamica, 41 (2016),481-493,Scopus.
18Adly Samir, Tạ Thị Huyền Trang, Vũ Ngọc Phát, Guaranteed quadratic cost control of nonlinear time-varying delay systems via output feedback stabilization, Pacific Journal of Optimization, 12 (2016), 2016, 649-667,SCI(-E); Scopus.
19P. T. Nam, Vũ Ngọc Phát, P. N. Pathirana, H. Trinh, Stability analysis of a general family of nonlinear positive discrete time-delay systems, International Journal of Control, 89 (2016), 1303-1315, SCI(-E); Scopus.
20P. Niamsup, Vũ Ngọc Phát, A new result on finite-time control of singular linear time-delay systems, Applied Mathematics Letters, 60 (2016), 1-7, SCI(-E); Scopus.
21Tạ Thị Huyền Trang, Vũ Ngọc Phát, Adly Samir, Finite-time stabilization and H∞ control of nonlinear delay systems via output feedback. Journal of Industrial and Management Optimization 12 (2016), 303–315, SCI(-E); Scopus.
22Vũ Ngọc Phát, Nguyen T. Thanh, H. Trinh, Full-order observer design for nonlinear complex large-scale systems with unknown time-varying delayed interactions. Complexity, 21 (2015), 123-133, SCI(-E); Scopus.
23Le Van Hien, Vũ Ngọc Phát, H. Trinh, New generalized Halanay inequalities with applications to stability of nonlinear non-autonomous time-delay systems. Nonlinear Dynamics, 82 (2015), 563-575, SCI(-E); Scopus.
24Vũ Ngọc Phát, Nguyễn Huyền Mười, M.V. Bulatov, Robust finite-time stability of linear differential-algebraic delay equations, Linear Algebra and its Applications, 487 (2015), 146-157, SCI(-E), Scopus.
25Piyapong Niamsup, K. Ratchagit, Vũ Ngọc Phát, Novel criteria for finite-time stabilization and guaranteed cost control of delayed neural networks, Neurocomputing, 160 (2015), 281-286, SCI(-E), Scopus.
26Piyapong Niamsup, Vũ Ngọc Phát, State Feedback Guaranteed Cost Controller for Nonlinear Time-Varying Delay Systems, Vietnam Journal of Mathematics, 43 (2015), 215-228, Scopus.
27Le Van Hien, Le Huy Vu, Vũ Ngọc Phát, Improved delay-dependent exponential stability of singular systems with mixed interval time-varying delays, IET Control Theory & Applications, 9 (2015), 1364 - 1372, SCI(-E), Scopus.
28Vũ Ngọc Phát, P. Niamsup, Global stabilization of linear time-varying delay systems with bounded controls. Applied Mathematics Letters, 46 (2015), 11-16, SCI(-E), Scopus.
29M.V. Thuan, Vũ Ngọc Phát, T.L. Fernando, H. Trinh, Exponential stabilization of time-varying delay systems with nonlinear perturbations, IMA Journal of Mathematical Control and Information, 31 (2014), 441-464, SCI(-E), Scopus.
30M.V. Bulatov, M.N. Machkhina, Vũ Ngọc Phát, Existence and uniqueness of solutions to integral-algebraic equations  with variable limits of integrations, Communications on Applied Nonlinear Anaysis,  21(2014), 65-76, Scopus.
31Mai Viet Thuan, Le Van Hien, Vũ Ngọc Phát, Exponential stabilization of non-autonomous delayed neural networks via Riccati equations, Applied Mathematics and Computation, 246(2014), 533-545, SCI(-E), Scopus.
32Vũ Ngọc Phát, Nguyen Huu Sau, On exponential stability of linear singular positive delayed systems, Applied Mathematics Letters, 38 (2014), 67–72, SCI(-E), Scopus.
33Vũ Ngọc Phát, T. Fernando, H. Trinh, Observer-based control for time-varying delay neural networks with nonlinear observation, Neural Computing and Applications, Vol. 24, 2014, 1639-1645, SCI(-E); Scopus.
34Nguyen Truong Thanh, Vũ Ngọc Phát, Decentralized stability for   switched  nonlinear large-scale  systems with interval  time-varying delays in interconnections,  Nonlinear Analysis: Hybrid Systems,  11 (2014),  21-36, SCI(-E); Scopus.
35Le A. Tuan, Phan T. Nam, Vũ Ngọc Phát, $H_\infty$ controller design for neural networks with mixed interval time-varying delays, Neural Processing Letters, 37(2013), 235-249, SCI(-E); Scopus.
36Vũ Ngọc Phát, H. Trinh, Design of $H_\infty $ control of neural networks with time-varying delys, Neural Computing and Applications, 22 (2013), 323 - 331, SCI(-E); Scopus.
37Vũ Ngọc Phát, $H_\infty$ control for nonlinear systems with interval non-differentiable time-varying delay, European Journal of Control, 19 (2013), 190 - 198, SCI(-E); Scopus.
38Vũ Ngọc Phát, T. L. Fernando and H. M. Trinh, Output feedback guaranteed cost control of uncertain linear discrete systems with interval time-varying delays, Applied Mathematical Modelling, 37 (2013), 1580 - 158, SCI(-E); Scopus.
39Vũ Ngọc Phát, M. V. Thuan, New criteria for  stability and stabilization of neural networks with mixed  time-varying delays,  Vietnam Journal of Mathematics, 40 (2012), 79-93, Scopus.
40Vũ Ngọc Phát, M. V. Thuan and H. M. Trinh, Dynamic output feedback guaranteed cost control of linear  systems with    time-varying delays in states and outputs,  Applied Mathematics and Computation, 218 (2012), 10697–10707, SCI(-E); Scopus.
41Vũ Ngọc Phát, T. L. Fernando and H. M. Trinh, Decentralized stabilization of large-scale systems with  time-varying delays in  interconnections,  International Journal of Adaptive Control and Signal Processing,  26 (2012), 541 -- 554, SCI(-E); Scopus.
42Vũ Ngọc Phát, L. V. Hien, New exponential estimate for robust stability of nonlinear neutral time delay  systems with convex polytopic uncertainties,  Journal Nonlinear and Convex Analysis, 12 (2012), 541 -- 553, SCI(-E); Scopus.
43Vũ Ngọc Phát, Nguyen T. Thanh, Decentralized $H_infty$ control for  large-scale  interconnected nonlinear time-delay  systems  via  LMI approach,  Journal of Process Control, 22 (2012), 1325 -- 1339, SCI(-E); Scopus.
44Vũ Ngọc Phát, K. Ratchagit and Y. Khongtham, LMI approach to exponential stability of linear  systems with  interval  time-varying delays,  Linear Algebra and its Applications, 336 (2012), Pp. 243–251, SCI(-E); Scopus.
45Vũ Ngọc Phát, M. V. Thuan, Optimal guaranteed cost control of linear systems with mixed time-varying delayed state and control,  Journal of Optimization Theory and Applications, 125 (2012), 394 -- 412, SCI(-E); Scopus.
46Vũ Ngọc Phát, Mai Viet Thuan and Hieu Trinh, Observer-based controller design of time-delay systems with an interval time-varying delay, Int. J. Appl. Math. Comput. Sci., 22 (2012), 921 -- 927, SCI(-E); Scopus.
47Vũ Ngọc Phát, K. Ratchagit, Stability and stabilization of switched linear discrete-time systems with interval time-varying delay,  Nonlinear Analysis: Hybrid Systems  5 (2011), 605 - 612, SCI(-E); Scopus.
48Vũ Ngọc Phát, T. Botmart and P. Niamsup, Delay-dependent exponential stabilization for uncertain linear systems with interval non-differentiable time-varying delays,  Applied Mathematics and Computation  217 (2011), 8236 - 8247, SCI(-E); Scopus.
49Vũ Ngọc Phát, N. S. Bay and N. M. Lin, Robust $H_\infty $ control of linear time-varying systems with mixed delays in the Hilbert space, Optimal Control Applications and Methods 32 (2011), 545 -557, SCI(-E); Scopus.
50Vũ Ngọc Phát, T. T. Anh and L. V. Hien, Stability analysis for linear non-autonomous  systems with mixed multiple time-varying delays and applicationsActa Mathematica Vietnamica 36 (2011), 129 -- 143, Scopus.
51Vũ Ngọc Phát, P. Niamsup, A novel exponential stability condition of hybrid neural networks with time-varying delay, Vietnam Journal of Mathematics 38 (2010), 341 - 351, Scopus.
52Vũ Ngọc Phát, L. V. Hien, Robust stabilization of linear polytopic control systems with mixed delays, Acta Mathematica Vietnamica 35 (2010), 427 - 438, Scopus.
53Vũ Ngọc Phát, V. Jeyakumar, Stability, stabilization and duality for linear time-varying systems, Optimization, 59 (2010), 447 -- 460, SCI(-E); Scopus.
54Vũ Ngọc Phát, P. T. Nam and H. M. Hien, Asymptotic stability of linear state-delayed neutral systems with polytope type uncertainties, Dynamic Systems and Applications 19 (2010), 63 -- 74, SCI(-E); Scopus.
55Vũ Ngọc Phát, Switched controller design for stabilization of nonlinear hybrid systems with time-varying delays in state and control, Journal of the Franklin Institute, 347 (2010), 195 -- 207, SCI(-E); Scopus.
56Vũ Ngọc Phát, Q. P. Ha and H. Trinh, Parameter-dependent $H_\infty$ control for linear time delay polytopic systems, Journal of Optimization Theory and Applications, 147 (2010), 58 -- 70, SCI(-E); Scopus.
57Vũ Ngọc Phát, $H_\infty$ control for nonlinear time-varying delay systems with polytopic type uncertainties, Nonlinear Analysis: Theory, Methods and Applications, 72 (2010), 4254 -- 4263, SCI(-E); Scopus.
58Vũ Ngọc Phát, P. T. Nam, Exponential stability delayed Hopfield neural networks with various activation functions and polytopic uncertainties, Physics Letters A, 374 (2010), 2527 -- 2533, SCI(-E); Scopus.
59Vũ Ngọc Phát, H. Trinh, Exponential stabilization of neural networks with various activation functions and mixed time-varying delays,  IEEE Trans. Neural Networks, 21 (2010), 1180 -- 1185.
60Vũ Ngọc Phát, T. Bormat and P. Niamsup, Switching design for exponential stability of a class of nonlinear hybrid time-delay systems, Nonlinear Analysis: Hybrid Systems,  3 (2009), 1- 10.
61L.V. Hien, Vũ Ngọc Phát, Exponential stabilization for a class of hybrid systems with mixed delays in state and control, Nonlinear Analysis: Hybrid Systems, 3 (2009),  259- 265.
62P. Niamsup, Vũ Ngọc Phát, $H_\infty $ optimal control  of LTV systems with time-varying delay via controllability approach,  ScienceAsia, 35 (2009), 284-289.
63L.V. Hien, Vũ Ngọc Phát, Delay feedback control in exponential stabilization of linear time-varying systems with input delay, IMA J. Math. Contr. Inform., 26 (2009), 163-177.
64L.V.Hien, Vũ Ngọc Phát, Exponential stability and stabilization of a class of uncertain linear time-delay systems,  J. of the Franklin Institute, 346 (2009), 611-625.
65L.V. Hien, Q.P. Ha, Vũ Ngọc Phát, Stability and stabilization of switched linear dynamic systems with time delay and uncertainties, Appl. Math. Computation, 210 (2009), 223-231.
66P.T. Nam, Vũ Ngọc Phát, Robust stabilization of linear systems with delayed state and control, J. Optim. Theory Appl., 140 (2009), 287-299.
67P.T. Nam, Vũ Ngọc Phát, An improved stability criterion for a class of  neutral differential equations,  Appl. Math. Letters, 22 (2009), 31-35.
68Vũ Ngọc Phát, Q.P. Ha, $H_\infty$ control and exponential stability for a class of nonlinear non-autonomous systems with time-varying delay, J. Optim. Theory Appl., 142, (2009), 603-618.
69Vũ Ngọc Phát, L.V. Hien, An application of Razumikhin theorem to exponential stability for linear non-autonomous systems with arbitrary time-varying delays, Appl. Math. Letters, 22 (2009), 1412-1417.
70Vũ Ngọc Phát, Memoryless $H_\infty$ controller design for switched nonlinear systems with mixed time-varying delays,  Int. J. of Control, 82 (2009),  1889-1898.
71Vũ Ngọc Phát, P. Niamsup, Stability analysis for a class of functional differential equations and applications,Nonlinear Anal.: Theory, Methods \& Applications, 71 (2009), 6265 -- 6275.
72P. Niamsup, K. Mukdasai, Vũ Ngọc Phát, Linear uncertain non-autonomous time-delay systems: stability and stabilizability via Riccati equations, Electron, J. Differential Equations 2008, 10 pp.
73Phan Than Nam, Vũ Ngọc Phát, Robust exponential stability and stabilization of linear uncertain polytopic time-delay systems, J. Control Theory Appl. 6 (2008), 163 - 170.
74Vũ Ngọc Phát, D. Q. Vinh and N. S. Bay, $L_2$-stabilization and $H_\infty$ control for linear non-autonomous time-delay systems in Hilbert spaces via Riccati equations, Adv. Nonlinear Var. Inequal. 11 (2008), 75 - 86.
75P. Niamsup, K. Mukdasai, Vũ Ngọc Phát, Improved exponential stability for time-varying systems with nonlinear delayed perturbations,  Appl. Math. Computation, 204 (2008), 490-495.
76Vũ Ngọc Phát, Q.P. Ha, New characterization of stabilizability via Riccati equations for LTV systems, IMA J. Math.Contr. Inform.,  25 (2008), 419-429.
77Vũ Ngọc Phát, Phan Thanh Nam, Exponential stability and stabilization of uncertain linear time-varying systems using parameter dependent Lyapunov function, Internat. J. Control 80 (2007), N0 8, 1333 - 1341.
78Vũ Ngọc Phát, Dao Quang Vinh, Controllability and $H_\infty$ control for linear continuous time-varying uncertain systems. Differential equations and applications,  4 (2007), 105 - 111.
79Vũ Ngọc Phát, S. Pairote, Exponential stability of switched linear systems with time-varying delay, Electron. J. Differential Equations 2007, 10 pp.
80Vũ Ngọc Phát, Global stabilization for linear continuous time-varying systems, Appl. Math. Comput. 175 (2006), 1730 - 1743.
81Vũ Ngọc Phát, Satiracoo Pairote, Global stabilization of linear periodically time-varying switched systems via matrix inequalities, J. Control Theory Appl. 4 (2006), 26 - 31.
82Vũ Ngọc Phát, Piyapong Niamsup, Stability of linear time-varying delay systems and applications to control problems, J. Comput. Appl. Math. 194 (2006), 343 - 356.
83Vũ Ngọc Phát, Sufficient conditions for stabilizability of linear periodic differential equations, Southeast Asian Bull. Math. 30 (2006), 331 - 340.
84Vũ Ngọc Phát, P. Niamsup, Stabilization of linear nonautonomous systems with norm-bounded controls, J. Optim. Theory Appl. 131 (2006), 135 - 149.
85Vũ Ngọc Phát, Phan Thanh Nam, Exponential stability criteria of linear non-autonomous systems with multiple delaysElectron. J. Differential Equations 2005, N0 58, 8 pp.
86Vũ Ngọc Phát, A. V. Savkin, Robust set-valued state estimation for linear time-varying systems in Hilbert spaces, Nonlinear Funct. Anal. Appl. 10 (2005), 285 - 298.
87Vũ Ngọc Phát, A. V. Savkin, Robust set-valued state estimation for linear time-varying systems in Hilbert spaces, Nonlinear Funct. Anal. Appl. 10 (2005), 285 - 298.
88Vũ Ngọc Phát, J. Jiang, Stabilization of nonlinear discrete-time systems via a digital communication channel. Int. J. Math. Math. Sc. 1 (2005), 43 - 56.
89Vũ Ngọc Phát, Robust stability and stabilizability of uncertain linear hybrid systems with state delays, IEEE Trans. on CAS II 52 (2004), 894 - 898.
90Vũ Ngọc Phát, D. Q. Vinh, Controllability and H-infinity control of linear continuous time-varying uncertain systems. Diff. Equations and Appl. 4 (2004), 313 - 327.
91Vũ Ngọc Phát, Jianming Jiang, Andrey V. Savkin, Ian R. Petersen, Robust stabilization of linear uncertain discrete-time systems via a limited capacity communication channel, Systems Control Letters. 53 (2004), 347 - 360.
92Vũ Ngọc Phát, Nonlinear $H_\inf}$ control in Hilbert spaces via Riccati operator equation, Nonlinear Funct. Anal. Appl. 9 (2004), 79 - 92.
93Vũ Ngọc Phát, N. M. Linh, On the stabilization of nonlinear continuous-time systems in Hilbert spaces, Southeast Asian Bull. Math. 27 (2003), 135 - 142.
94Nguyen Sinh Bay, Vũ Ngọc Phát, Stability analysis of nonlinear retarded difference equations in Banach spaces. Advances in difference equations, IV, Comput. Math. Appl. 45 (2003), 951 - 960.
95Nguyen Sinh Bay, Nguyen The Hoan, Vũ Ngọc Phát, On the asymptotic stability of time-varying differential equations with multiple delays and applications, Acta Math. Vietnam. 28 (2003), 51 - 64.
96Vũ Ngọc Phát, On the stability of a class of nonlinear time-delay differential control systems in Banach spaces, Diff. Equations and Appl. 3 (2003), 203 - 218.
97Vũ Ngọc Phát, Complete stabilization of distributed parameter systems: A controllability analysis approach. In: Proc. 15th Int. IFAC’2002 Congress, July, 2002, Barcelona, 1325 - 1330.
98Vũ Ngọc Phát, Andrey V. Savkin, Robust state estimation for a class of uncertain time-delay systems. Systems Control Letters, 47 (2002), 237 - 245.
99Vũ Ngọc Phát, New stabilization criteria for linear time-varying systems with state delay and norm-bounded uncertainties. IEEE Trans. Automat. Control 47 (2002), 2095 - 2098.
100Vũ Ngọc Phát, Nguyen Sinh Bay, Asymptotic stability of a class of nonlinear functional differential equations, Nonlinear Funct. Anal. Appl. 7 (2002), 299 - 311.
101Vũ Ngọc Phát, Nguyen Sinh Bay, Lyapunov stability and stabilizability of linear differential time-varying delay systems in Hilbert spaces, Far East J. Math. Sci. (FJMS) 5 (2002), N0 1, 65 - 80.
102Vũ Ngọc Phát, Tran Tin Kiet, On the Lyapunov equation in Banach spaces and applications to control problems, Int. J. Math. Math. Sci. 29 (2002), 155 - 166.
103J. Y. Park, Vũ Ngọc Phát, I. H. Jung, Constrained controllability of linear time-varying systems in Banach spaces, Optimization 50 (2001), 187 - 204.
104Vũ Ngọc Phát, Stabilization of linear continuous time-varying systems with state delays in Hilbert spaces, Elect. J. Diff. Equations (2001), 1 - 12.
105Nguyen Manh Linh, Vũ Ngọc Phát, Exponential stability of nonlinear time-varying differential equations and applications, Elect. J. Diff. Equations (2001), N0 34, 1 - 12.
106Vũ Ngọc Phát, T. T. Kiet, Global controllability to a target set of a discrete-time system in Banach spaces. Nonlinear Funct. Anal. Appl. 5 (2000), 23 - 37.
107Jong Yeoul Park, Vũ Ngọc Phát, Il Hyo Jung, On stability of nonlinear nonautonomous systems by Lyapunov's direct method. J. Korean Math. Soc. 37 (2000), 805 - 821.
108Vũ Ngọc Phát, Constrained controllability theory: from linear to nonlinear dynamical discrete-time systems. East-West J. Math. 2 (2000), 1 - 19.
109Vũ Ngọc Phát, J. Y. Park, On the Gronwall inequality and asymptotic stability of nonlinear discrete systems with multiple delays. Dynam. Systems Appl. 9 (2000), 309 - 321.
110Vũ Ngọc Phát, Tran Tin Kiet, Lyapunov stability of nonlinear time-varying differential equationsActa Math. Vietnam. 25 (2000), N0 2, 231 - 249.
111Vũ Ngọc Phát, Jong Yeoul Park, and Il Hyo Jung, Constrained controllability of linear time-varying Stability and constrained controllability of linear control systems in Banach spaces. J. Korean Math. Society 37 (2000), 593 - 612.
112P. Niamsup, Vũ Ngọc Phát, Asymptotic stability of nonlinear control systems described by differential equations with multiple delays. Elect. J. Diff. Equations 11 (2000), 1 - 17.
113Vũ Ngọc Phát, Introduction to mathematical control theory (in Vietnamese) – Nhập môn lý thuyết điều khiển tối ưu. NXB ĐHQG, Hanoi, 2000, 245 trang.
114Vũ Ngọc Phát, Tran Tin Kiet, On the stabilizability of nonlinear systems in finite-dimensional spaces. Funct. Anal. Appl. 4 (1999), 73 - 85.
115Vũ Ngọc Phát, Krein-Rutman theorem on existence of eigenvectors in Banach spaces : Recent extensions and applications. Nonl. Funct. Anal. Appl. 4 (1999), 25 - 40.
116Nguyen Sinh Bay, Vũ Ngọc Phát, Stability of nonlinear discrete time-varying retarded systems. Vietnam J. Math. 27 (1999), 373 - 377.
117Vũ Ngọc Phát, On the stability and stabilizability of nonlinear dynamical systems. Nonlinear Anal. Forum. 4 (1999), 65 - 75.
118Vũ Ngọc Phát, On the stability of time-varying differential equations. Optimization 45 (1999), 237 - 254.
119Vũ Ngọc Phát, J. Y. Park, Asymptotic stability of nonlinear purturbed discrete systems with multiple delays. In: Proc. Inter. Conf. Math. Anal. Appl. Chinju, Korea, 5 (1998), 123 - 137.
120Vũ Ngọc Phát, Jong Yeoul Park, Further generalizations of Farkas' theorem and applications in optimal control. J. Math. Anal. Appl. 216 (1997), 23 - 39.
121Vũ Ngọc Phát, Weak asymptotic stabilizability of discrete-time inclusions given by set-valued operators. J. Math. Anal. Appl. 202 (1996), 353 - 369.
122Vũ Ngọc Phát, Constrained control problems of discrete processes. World Scientific, Singapore-New Jersey-London, 1996, 228p.
123Vũ Ngọc Phát, Constrained controllability theory of dynamical systems. Dr. Sc. Thesis, Institute of Mathematics, Polish Academy of Sciences, Warszawa, Poland, 1995.
124Vũ Ngọc Phát, Some aspects of constrained controllability of discrete-time dynamical systems. Optimization 33 (1995), 57 - 79.
125Vũ Ngọc Phát, Constrained controllability of linear control infinite-dimensional systems: A set-valued analysis approach. IMA J. Math. Contr. Inform. 11 (1994), 185 - 199.
126Vũ Ngọc Phát, Constrained controllability and reachability of linear discrete-time descriptor systems. Optimization 31 (1994), 165 - 177.
127Vũ Ngọc Phát, Some remarks on controllability and reachability of nonstationary discrete-time processes. Optimization 29 (1994), 173 - 180.
128Vũ Ngọc Phát, Trinh Cong Dieu, On the Krein-Rutman theorem and its applications in controllability. Proceedings of AMS 124 (1994), 495 - 501.
129Vũ Ngọc Phát, K. Balachandra, On the controllability of linear descriptor systems in Banach spaces. Acta Math. Vietnam. 1 (1992), 67 - 76.
130Vũ Ngọc Phát, K. Murugesan, A note on constrained controllability of linear descriptor systems. Optimization 25 (1992), 77 - 82.
131Vũ Ngọc Phát, Trinh Cong Dieu, Linear control discrete-time systems with disturbances: Constrained controllability to a subset. Optimization 24 (1992), 319 - 327.
132Vũ Ngọc Phát, Trinh Cong Dieu, Constrained controllability of linear discrete-time systems with constrained controls and states in Banach spaces. SIAM J. Contr. and Optim. 30 (1992), 1311 - 1319.
133Vũ Ngọc Phát, Controllability problems of dynamical syatems: a set-valued approach. In: Proc. of the 36th Int. Colloquium on Applied Mathematics, Ilmelnau, Germany, October 1991, 121-132.
134Vũ Ngọc Phát, Control problems of nonlinear dynamical systems with phase constraints. Inter. Series of Numerical Analysis 99 (1991), 433 - 440.
135Vũ Ngọc Phát, Nguyễn Khoa Sơn, Linear nonstationary discrete-time systems: Null controllability with restrained controls in Banach spaces. Optimization. 2 (1990), 271 - 279.
136Vũ Ngọc Phát, An application of implicit function theorem in the solution of controllability problems. Kibernetika, USSR, 4 (1990), 55 - 59. English translation: Cybernetics, 27 (1990).
137Vũ Ngọc Phát, New results on controllability of linear nonstationary systems with constrained controls and states. In: Proc. of 14th Inter. Conference on Math. Optimization and Applications, Eisenach, FRG, December 11-16, 1989, 92 - 103.
138Vũ Ngọc Phát, Controllability of linear discrete-time systems with multiple delays on controls and states. Int. J. Contr. 5 (1989), 1645 - 1654.
139Vũ Ngọc Phát, Controllability of linear time-dependent systems with a phase constraint. Avtomatika i Telemekhanika, USSR 8 (1988), 51 - 59. English translation: Automat Remote Control 49 (1988), 998 - 1004.
140Vũ Ngọc Phát, Controllability of nonlinear discrete-time systems without differentiability assumption. Optimization 19 (1988), 133 - 142.
141Vũ Ngọc Phát, Approximate controllability of nonlinear discrete-time systems in Banach spaces. Acta Math. Vietnam. 13 (1988), 81 - 88.
142Vũ Ngọc Phát, R.G. Faradzev and V. A. Shapiro, Controllability theory of dynamical discrete-time systems. Avtomatika i Telemekhanika, USSR 1(1986), English translation: Automat Remote Control 47 (1986), 1 - 23.
143Vũ Ngọc Phát, Controllability in multivalued discrete-time processes. Kibernetika, USSR 5(1986), 62-67. English translation: Cybernetics 22 (1986), 610 - 615.
144Vũ Ngọc Phát, On the controllability of nonlinear two parameter discrete-time systems with constrained controls. Optimization 16 (1985), 869 - 876.
145Vũ Ngọc Phát, Qualitative properties of nonlinear dynamical systems. Ph. D. Thesis, Azerbaizan University, Bacu, USSR 1984 (in Russian).
146Vũ Ngọc Phát, Pseudoconvex sets and controllability of discrete-time systems in Banach spaces. Vestnik Kharcov University, USSR 254 (1984), 57 - 61. (in Russian).
147Vũ Ngọc Phát, Controllability of nonlinear two-parametric discrete-time systems. Probl. Optim. ASU, Bacu, USSR (1983), 171 - 179 (in Russian).
148Vũ Ngọc Phát, Controllability of discrete-time systems with nonconvex restrained controls. Optimization 14 (1983), 371 - 375.
149Vũ Ngọc Phát, Controllability problem of general nonlinear processes. Vietnam J. Math. 2 (1981), 27 - 31 (in Vietnamese).
150Vũ Ngọc Phát, Controllability of nonlinear dynamical discrete-time systems. Acta Math. Vietnam. 2 (1980), 63 - 74.
151Vũ Ngọc Phát, Controllability of pseudolinear dynamical systems. Vietnam J. Math. 2 (1980), 18 - 23 (in Vietnamese).