中国科学院数学与系统科学研究院期刊网
Regular Semigroups With Weak Medial Idempotents
Xiang Fei NI, Xiao Jiang GUO
Acta Mathematica Sinica, Chinese Series . 2018, (1): 107 -122 .  DOI: 10.12386/A2018sxxb0011