@article{10_4153_CMB_1995_055_6,
     author = {Zhou, Yiqiang},
     title = {A {Characterization} of {Left} {Perfect} {Rings}},
     journal = {Canadian mathematical bulletin},
     pages = {382--384},
     year = {1995},
     volume = {38},
     number = {3},
     doi = {10.4153/CMB-1995-055-6},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1995-055-6/}
}