中国科学院数学与系统科学研究院期刊网
AMS
Morita Context and Morita-Like Equivalence for the xst-Rings
Bai Yu OUYANG, Wen Ting TONG
Acta Mathematica Sinica . 2003, (2): 371 -380 .  DOI: 10.1007/s10114-002-0219-1