1. Nguyễn Đình Công, Hoang Nam, Lyapunov regularity of linear differential algebraic equations of index 1, Acta Mathematica Vietnamica, 29 (2004), 1 - 21.
2. Nguyễn Văn Châu, Note on the Jacobian condition and the non-proper value set, Annales Polonici Mathematici, 84 (2004), 203 - 210.
3. Phạm Kỳ Anh, Ha Thi Ngoc Yen, Tran Quoc Binh, On quasi-linear implicit difference equations, Vietnam Journal of Mathematics, 32 (2004), 75 - 85.
4. Phạm Kỳ Anh, Tran Quoc Binh, Stability and convergence of implicit iteration processes, Vietnam Journal of Mathematics, 32 (2004), 467 - 473
5. Tran Quoc Binh, Some fixed point theorems for mappings of two variables, Acta Mathematica Vietnamica, 29 (2004), 299 - 308.
6. Hà Huy Bảng, Mai Thi Thu, A Gagliardo-Nirenberg inequality for Orlicz spaces, East Journal on Approximations, 10 (2004), N03, 371 - 377.
7. Hà Huy Bảng, Mai Thi Thu, A property of entire functions of exponential type for Lorentz spaces, Vietnam Journal of Mathematics, 32 (2004), 219 - 225.
8. Hà Huy Bảng, Mai Thi Thu, A Landau-Kolmogorov inequality for Lorentz spaces, Tokyo Journal of Mathematics, 27 (2004), N01, 13 - 19.
9. Phạm Trà Ân, The representative theorems of languages in computer-Science, . In: Proceeding of the First National Symposium "Fundamental and applied Information Technology research", NXB Khoa học và Kĩ thuật, Hanoi, 2004, 23 - 31 (in Vietnamese).
10. Phan Thành An, Nguyễn Ngọc Hải, $\delta$-Convexity in Normed Linear Spaces, Numerical Functional Analysis and Optimization, 25 (2004), 407 - 422
11. Hoàng Xuân Phú, Approximate Fixed-Point Theorems for Discontinuous Mappings, Numerical Functional Analysis and Optimization, Vol. 25, No. 1&2, pp. 119-136, 2004
12. Hoàng Xuân Phú, Is Invexity Weaker than Convexity?, Vietnam Journal of Mathematics, Vol. 32, No. 1, pp. 87-94, 2004
13. Hoàng Xuân Phú, On some Badly-Solved Problems with Invexity, Acta Mathematica Vietnamica, Vol. 29, No. 1, pp. 89-106, 2004.
14. Hoàng Xuân Phú, On a Necessary Optimality Condition with Invexity, Acta Mathematica Vietnamica, Vol. 29, No. 2, pp. 141-148, 2004