@article{10_4153_CJM_1969_031_0,
     author = {Michler, Gerhard},
     title = {Idempotent {Ideals} in {Perfect} {Rings}},
     journal = {Canadian journal of mathematics},
     pages = {301--309},
     year = {1969},
     volume = {21},
     number = {1},
     doi = {10.4153/CJM-1969-031-0},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1969-031-0/}
}