中国科学院数学与系统科学研究院期刊网
Morita Equivalence for Factorisable Semigroups
Yu Qun CHEN(1),K. P. SHUM(2)
Acta Mathematica Sinica, Chinese Series . 2003, (3): 497 -506 .  DOI: 10.12386/A2003sxxb0070