Công bố năm 1991
1. Lê Tuấn Hoa, The Gorenstein property depends upon characteristic for affine semigroup rings, Archiv der Mathematik, 56 (1991), 228 - 235.
2. Lê Tuấn Hoa, Jürgen Stückrad, Wolfgang Vogel, Towards a structure theory for projective varieties of degree = codimension + 2, Journal of Pure and Applied Algebra, 71 (1991), 203 - 231.
3. Lê Tuấn Hoa, A note on projective monomial surfaces, Mathematische Nachrichten, 154 (1991), 183 - 188
4. Lê Tuấn Hoa, On monomial $k$-Buchsbaum curves in $P^3$, Manuscripta Mathematica, 73 (1991), 423 - 436.
5. Nguyễn Quốc Thắng, On the weak Hasse principle, Bulletin of the Polish Academy of Sciences, 39 (1991), 141 - 145
6. Nguyễn Quốc Thắng, A note on the Hasse principle. Addenda, Acta Arithmetica, 59 (1991), 145 - 147.
7. Effect of the subdivision strategy on convergence and efficiency of some global optimization algorithms, J. Global Optim. 1 (1991), 23 - 36
8. Polyhedral annexation, dualization and dimension reduction technique in global optimization, J. Global Optim. 1 (1991), 229 - 244
9. On the Cauchy problems for systems of partial differential equations with a distinguished variable, Numer. Funct. Anal. Optim. 12 (1991), 213 - 236
10. Sur l irregularite du diagramme splice pour l entrelacement a l infini des courbes planes, C. R. Acad. Sci. Paris, Serie 1, 313 (1991), 277 - 280
11. A formula for Lojasiewicz numbers and a new characterization of the irregularity at infinity of algebraic plane curves, Vietnam J. Math. 19 (1991), 72 - 82
12. On implicit function theorems for set-valued maps and their application to mathematical programming under inclusion constraints, Appl. Math. Optim. 24 (1991), 35 - 54
13. New proof for a theorem of F. Giannessi, J. Optim. Theory Appl. 68 (1991), 385 - 387
14. On a class of Watson multidimensional integral transforms, Dokl. Akad. Nauk SSSR 317 (1991), 797 - 800; English transl.: Soviet Math. Dokl. 43 (1991), 508 - 510
15. An algorithm for indefinite quadratic programming with convex constraints, Operations Resarch Letters 10 (1991), 323 - 327
16. Some approximative problems for nonlinear inequalities, Uspekhi Matematicheskikh Nauk, 46 (1991) (in Russian).
