乘法半群为矩形群的nil扩张的半环
蒲楠, 李刚
Semirings whose multiplicative semigroups are nil extensions of rectangular groups
PU Nan, LI Gang
山东科学 . 2019, (2): 125 -129 .  DOI: 10.3976/j.issn.1002-4026.2019.02.016