1. The Hamy symmetric function and its generalization;Guan;Math Inequal Appl,2006
2. A class of symmetric functions for multiplicatively convex function;Guan;Math Inequal Appl,2007
3. A generalization of the notion of convex function;Aczél;Norske Vid Selsk Forh Trondhjem,1947
4. Inequalities for means;Vamanamurthy;J Math Anal Appl,1994
5. Convex Functions;Roberts,1973