中国科学院数学与系统科学研究院期刊网
AMS
On Semilattice Decomposition of an Abel-Grassmann's Groupoid
Madad KHAN, Saima ANIS
Acta Mathematica Sinica . 2012, (7): 1461 -1468 .  DOI: 10.1007/s10114-012-0014-6