@article{05534606, title = {An interchangeable theorem of }, journal = {Journal of Inequalities and Applications [electronic only]}, volume = {2009}, year = {2009}, doi = {10.1155/2009/135693}, zbl = {1163.33322}, language = {en}, url = {http://dml.mathdoc.fr/item/05534606} }
Ruan, Hongshun. An interchangeable theorem of . Journal of Inequalities and Applications [electronic only], Tome 2009 (2009) . doi : 10.1155/2009/135693. http://gdmltest.u-ga.fr/item/05534606/