1. Nguyễn Đông Yên, Trinh Cong Dieu, On local controllability of nondifferentiable discrete-time systems with nonconvex constraints on controls., Optimization, 20 (1989), 189 - 199.
2. Lê Tuấn Hoa, Algorithmetical aspects of the problem of classifying multi-projections of Veronese varieties, Manuscripta Mathematica, 63 (1989), 317-331.
3. Nguyễn Quốc Thắng, On the determination of multiplicators of similitudes over local and global fields, Journal of the Faculty of Science. University of Tokyo. Section IA. Mathematics, 36 (1989), 789 - 802.
4. Some integral transformations with a Macdonald function in the kernel, In: Current Analysis and Its Applications, Naukova Dumka, Kiev, 1989, 16 - 22 (in Russian).
5. On the pseudodifferential operators with real analytic symbols and their applications, J. Fac. Sci. Univ. Tokyo, Sect. IA, 36 (1989), No 3, 803 - 825
6. A note on the fixed-point set for multivalued mappings, Acta Math. Vietnam. 14 (1989), 101 - 103
7. On minimal models of algebraic curves, Matem. Sb. 180 (1989), 625 - 634 (in Russian).
8. On the automorphisms of the Fermat curve, Vestnik Mosk. Univ. 1989, 23 - 26
9. Minimal models of algebraic curves over global fields, Ph. D. Thesis, Moscow State University, 1989
10. Le comportement geometrique a l infini des polynomes de deux variables complexes, C. R. Acad. Sci. Paris, Serie 1, 309 (1989), 183 - 186
11. Sur la fibration globale des polynomes de deux variables complexes, C. R. Acad. Sci. Paris, Serie 1, 309 (1989), 231 - 234
12. On local controllability of nondifferentiable discrete-time systems with nonconvex constraints on controls, Optimization 20 (1989), 189 - 199
13. Optimal state estimation for a stochastic dynamical system from point process observations, Methods Oper. Research, 1989, 421 - 430