1. Trần Vũ Thiệu, A transportation problem in minimum time with an additional constraint, Ekonom. i Mat. Metody 6 (1970), 132 - 136 (in Russian).
2. Trần Vũ Thiệu, Methods for solving linear programs with block structure, Ph. D. Thesis. Economico-Mathematical Institute, Moscow, 1970, 120 p. (in Russian
3. Phạm Hữu Sách, Optimal control for discrete systems, Ph. D. Thesis, Moscow 1970, 102 p. (in Russian).
4. Phạm Hữu Sách, On optimal control for discrete systems with time lag, Avtomatika i Telemekhanika 1970, 40 - 49 (in Russian).
5. Phạm Hữu Sách, Singular controls for discrete systems, Z. Vycisl. Mat. i Mat. Fiz. 10 (1970), 857 - 867 (in Russian).
6. Phạm Hữu Sách, On the optimal control theory for discrete processes, Z. Vycisi. Mat. i Mat. Fiz. 10 (1970), 607 - 620 (in Russian).
7. Ngô Văn Lược, Boundary value problems in some classes of generalized analytic vectors, Ph. D. Thesis, Tbilisi, 1970, 93p. (in Russian).
8. Ngô Văn Lược, The general type boundary value problems of linear conjugation with displacements of Q-holomorphic vectors, Bull. Acad Sci. Georgian SSR 57 (1970), 519 - 522.
9. Lê Hội, On formal system (in Vietnamese), Tập san Vận trù và Máy tính 2 (1970)
10. Bùi Công Cường, Markovian reduced strategies in games in extensive form, Vestnik Leningrad Univ., Math. Mech. Astr. 4:9 (1970), 7 - 12 (in Russian).