中国科学院数学与系统科学研究院期刊网
AMS
On Coprime G-conjugacy Class Sizes in a Normal Subgroup
Xian He ZHAO, Hai Peng Qu, Gui Yun CHEN
Acta Mathematica Sinica . 2014, (9): 1588 -1594 .  DOI: 10.1007/s10114-014-2803-6