1. Phạm Hữu Sách, Nguyễn Đông Yên, On locally Lipschitz vector-valued invex functions, Bulletin of the Australian Mathematical Society, 47 (1993), 259 - 271.
2. Lê Tuấn Hoa, On minimal free resolutions of projective varieties of degree = codimension + 2, Journal of Pure and Applied Algebra, 87 (1993), 241 - 250.
3. Lê Tuấn Hoa, Koszul homology and generalized Cohen-Macaulay modules., Acta Mathematica Vietnamica, 18 (1993), 91 - 98.
4. Lê Tuấn Hoa, On reduction numbers and Rees algebras of powers of an ideal, Proceedings of the American Mathematical Society, 119 (1993), 415 - 422.
5. Nguyễn Quốc Thắng, Hermitian forms over division algebras over real function fields., Manuscripta Mathematica, 78 (1993), 9 - 35.