@article{10_4153_CMB_1969_083_9,
     author = {Burgess, W.D.},
     title = {On {Semi-Perfect} {Group} {Rings}},
     journal = {Canadian mathematical bulletin},
     pages = {645--652},
     year = {1969},
     volume = {12},
     number = {5},
     doi = {10.4153/CMB-1969-083-9},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1969-083-9/}
}