1. Nguyễn Văn Thu, Stable type and completely self-decomposable prob measures on Banach spaces, Bull. Pol. Acad. Sci. XXIX (1981), 637 - 642
2. Nguyễn Hữu Trợ, The asymptotic law of the number of patients in a space-time region, Acta Math. Vietnam. 6 (1981), 92 - 96
3. Nguyễn Tự Cường, Ngô Việt Trung, Uber schwache Sequenzen, Period. Math. Hungar. 11 (1981), 77 - 80
4. Ngô Việt Trung, Der graduierte Ring bezuglich des Primideals von Macaulay, Beitr. Algebra Geometrie 11 (1981), 35 - 40
5. Ngô Việt Trung, A class of imperfect prime ideals having the equality of ordinary and symbolic powers, J. Math. Kyoto Univ. 21 (1981), 239 - 250
6. Ngô Việt Trung, A characterization of two dimensional unmixed local domains, Mathematical Proceedings of the Cambridge Philosophical Society 89 (1981), 237 - 239
7. Ngô Việt Trung, Principal systems of ideals., Acta Math Vietnam. 6 (1981), 57 - 63
8. Phan Văn Chương, Random version of the Kakutani-Ky Fan fixed point theorem, Journal of Mathematical Analysis and Applications, Volume 82, Issue 2, August 1981, Pages 473-490
9. Trần Mạnh Tuấn, On some programs of mathematical statistics, Thông báo Khoa học, Viện khoa học Việt Nam, 1981, No 1, 8 - 11 (in Vietnamese).
10. Trần Mạnh Tuấn, Some problems on the use of computers in the research on applying mathematical statistics in Vietnam, Ph.D. Thesis, Institute of Mathematics, Hanoi, 1981 (in Vietnamese).
11. Hoàng Tụy, On variable dimension algorithms and algorithms using primitive sets, Mathematische Operationsforschung und Statistik. Series Optimization 12 (1981), 361 - 381
12. Hoàng Tụy, A fixed point theorem involving a hybrid inwardness-contraction condition, Math. Nachr. 102 (1981), 271 - 275
13. Hoàng Tụy, N. Q. Thai, Minimizing a concave function over a compact convex set, In: Proceedings of the Conference on Optimization, Vitte/Hiddensee, May 1981, 15 - 20
14. Hoàng Tụy, Conical algorithm for solving a class of complementarity problems, Acta Math. Vietnam. 6 (1981), 3 - 17
15. Đào Quang Tuyến, On the assymptotic behaviours of sequences of random variables, Annales de l’Institut Henri Poincare, Section B, XVII (1981), 63 - 73
16. Đỗ Long Vân, Problème des mots et de conjugaison pour une classe de groupes de présentation finie, C. R. Acad. Sci. Paris, Série I 292 (1981),773 - 776
17. Trần Đức Vân, On solvability of mixed problem for parabolic equations of infinite order, Trudy of Sobolev seminars, Novosibirsk, 2 (1981), 124 - 130
18. Nguyễn Tự Cường, Trivialite des deploiements de reseaux holomoes. Bull. Math, France Memoire 6 (1981), 78 - 85
19. Hồ Đăng Phúc, Nguyễn Văn Thu, Universal random distribution, Vietnam. J. Math. 9 (1981), 1-4