1. Nguyễn Văn Thu, A characterization of some probability distributions, In: Lecture Note in Math. 828 (1980), 302 - 308
2. Ngô Việt Trung, Über allgemeine Hyperflächenschnitte einer algebraischen Varietät, Monatsh. Math. 89 (1980), 323 - 340
3. Ngô Việt Trung, Spezialisierungen allgemeiner Hyperflọchenschnitte und Anwendungen, In: Seminar D. Eisenbud - B. Singh - W. Vogel, Vol. I, Teubner-Verlag, Leipzig, 1980, 4 - 43
4. Ngô Việt Trung, Some criteria for Buchsbaum modules, Monatsh. Math. 90 (1980), 331 - 337
5. Hoàng Tụy, Three improved versions of Scarf's method using conventional subsimplices and allowing restart and continuation procedures, Math. Oper. Stati. Ser. Optim. 11 (1980), 347 - 365
6. Hoàng Tụy, Solving equations 0(f(x)) under general boundary conditions, In: Numerical Solution of Highly Nonlinear Problems, (W. Forster ed.), North-Holland, (1980), 271 - 296
7. Nguyễn Văn Thoại, Hoàng Tụy, Convergent algorithms for minimizing a concave function, Math. Oper. Research 5 (1980), 556 - 566
8. Nguyễn Văn Thoại, Hoàng Tụy, Solving the linear complementarity problem via concave programming, In: Methods of Operations Research, (R.E. Burkard and T. Ellinger eds.), 1980, 175 - 178
9. Trần Đức Vân, Elliptic equations of infinite order with arbitrary nonlinearities and corresponding function spaces, Math. Sb., 113 (155) (1980), 245 - 262; English transl.: Math. USSR Sb., 41 (1982), 203 - 216
10. Trần Đức Vân, A boundary value problem for infinite-order nonlinear ordinary differential equations with rapidly [slowly] increasing coefficients, Differ. Uravn. 16 (1980), 1037 - 1046 (in Russian). English transl.: Differential Equations 16 (1980)
11. Trần Đức Vân, Resolubilite des problemes aux limites pour des equations non lineaires elliptiques d'ordre infini, C. R. Acad. Sc. Paris 290 (1980), 501 - 504
12. Trần Đức Vân, Solvability of boundary value problems for degenerate nonlinear differential equations of infinite order, Differ. Uravn. 16 (1980), 1805 - 1863; English transl.: Differential Equations 16 (1980), 1202 - 1211
13. Trần Đức Vân, Nontriviality of Sobolev-Orlicz spaces of infinite order in a bounded domain of Euclidean space, Dokl. Akad. Nauk SSSR 250 (1980), 1331 - 1334; English transl.: Soviet Math. Dokl. 21 (1980), 335 - 338
14. Trần Đức Vân, Traces of functions from Sobolev-Orlicz of infinite order and inhomogenous boundary value problem, Dokl. Akad. Nauk SSSR 254 (1980), 1357 - 1361; English transl.: Soviet Math. Dokl. 22 (1980), 626 - 630
15. Trần Đức Vân, The theory of nonlinear differential equations of infinite order and corresponding function spaces, Dr. Sc. Thesis, Institute of Math., USSR Academy of Sciences, Novosibirsk, 1980, 230 p (in Russian).
16. Hà Huy Vui, Sur les points doptimum de Pareto local à determination finie ou infinie, C. R. Acad. Sci. Paris Serie A, 290 (1980), 685 - 688
17. Korobov. V. I, Nguyễn Khoa Sơn, Controllability of linear systems in a Banach space in the presence of constraints on controls, I, Differ. Uravnenia 16 (1980), 806 - 817 (in Russian).
18. Korobov. V. I, Nguyễn Khoa Sơn, Controllability of linear systems in a Banach space in the presence of constraints on controls, II, Differ. Uravnenia 16 (1980), 1010 - 1022 (in Russian).
19. Nguyễn Khoa Sơn, $\sigma$ controllability of linear autonomous systems with constraints on controls, Differ. Uravnenia 16 (1980), 394 - 404 (in Russian).