%0 Journal Article %A Michler, Gerhard %T Idempotent Ideals in Perfect Rings %J Canadian journal of mathematics %D 1969 %P 301-309 %V 21 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1969-031-0/ %R 10.4153/CJM-1969-031-0 %F 10_4153_CJM_1969_031_0