中国科学院数学与系统科学研究院期刊网
Complementary Inequalities to Improved AM-GM Inequality
Hamid Reza MORADI, Mohsen Erfanian OMIDVAR
Acta Mathematica Sinica . 2017, (12): 1609 -1616 .  DOI: 10.1007/s10114-017-7118-y