Bùi Thế Tâm, E. G. Golshtein, Method of convex programming based on modified Lagrangian functions, Economics and Math. Methods 13 (1977), 1271 - 1278 (in Russian).
Lê Công Thành, Estimations of some parameters of finite graphs and applications, Elektron. Informationsverarb. Kybernet. 13 (1977), 505 - 521 (in Russian).
Hoàng Tụy, Stability property of a system of inequalities, Math. Oper. Stati. Ser. Optim. 8 (1977), 27 - 39
Hoàng Tụy, Critical mappings and extremum problems, Mat. Metody Peshenya Ekonom. Zadachi Sbornik 7 (1977), 69 - 84 (in Russian).
Đỗ Long Vân, V. D. Man, Bemerkungen zu einer Klasse von durch eindimensionale iterative Automaten akzeptierten Sprachen, Elektron. Inf. Kybern. 149 (1978), 507 - 517
Đỗ Long Vân, V. D. Man, Quasimodules, Tap chi Toan hoc 5 (1977), 28 - 33 (in Vietnamese).
Đỗ Long Vân, V. D. Man, Several kinds of subquasimodules, Tap chi Toan hoc 5 (1977), 16 - 26 (in Vietnamese).
Trần Đức Vân, The transmission problems for elliptic systems of partial differential equations, Ph.D. Thesis, Belorussian State University, 1977, 110 p (in Russian).
Hà Huy Vui, Nguyễn Tự Cường, Sur les germes de functions infiniment determines, C. R. Acad. Sc. Paris 285 (1977), 1045 - 1048