中国科学院数学与系统科学研究院期刊网
AMS
Nonorientable Genera of Petersen Powers
Wen Zhong LIU, Ting Ru SHEN, Yi Chao CHEN
Acta Mathematica Sinica . 2015, (4): 557 -564 .  DOI: 10.1007/s10114-015-4096-9