Outer γ -convex functions on a normed space. Phan Thanh An — 2005 JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only]
A new type of stable generalized convex functions. An, Phan Thanh — 2006 JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only]
A modification of Graham's algorithm for determining the convex hull of a finite planar set. An, Phan Thanh — 2007 Annales Mathematicae et Informaticae