中国科学院数学与系统科学研究院期刊网
AMS
Ideals in Morita Rings and Morita Semigroups
Yu Qun CHEN, Yun FAN, Zhi Feng HAO
Acta Mathematica Sinica . 2005, (4): 893 -898 .  DOI: 10.1007/s10114-004-0427-y