Công bố năm 2003
1. Hoàng Xuân Phú, On Circumradii of Sets and Roughly Contractive Mappings, Vietnam Journal of Mathematics, Vol. 31, No. 1, pp. 115-122, 2003
2. Hoàng Xuân Phú, Rough Convergence in Infinite Dimensional Normed Spaces, Numerical Functional Analysis and Optimization, Vol. 24, No. 3&4, pp. 285-301, 2003.
3. Hoàng Xuân Phú, Some Geometrical Properties of Outer γ-Convex Sets, Numerical Functional Analysis and Optimization, Vol. 24, No. 3&4, pp. 303-309, 2003
4. Hoàng Xuân Phú, Strictly and Roughly Convexlike Functions, Journal of Optimization Theory and Applications, Vol. 117, No. 1, pp. 139-156, 2003
5. Hoàng Xuân Phú, Nguyễn Ngọc Hải, Phan Thành An, Piecewise Constant Roughly Convex Functions, Journal of Optimization Theory and Applications, Vol. 117, No. 2, pp. 415-438, 2003
6. Hoàng Xuân Phú, Fixed-Point Property of Roughly Contractive Mappings, Zeitschrift fur Analysis und ihre Anwendungen, Vol. 22, No. 3, pp. 517-528, 2003.
