%0 Journal Article %A Koh, Kwangil %T On Lifting Idempotents %J Canadian mathematical bulletin %D 1974 %P 607-607 %V 17 %N 4 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1974-111-5/ %R 10.4153/CMB-1974-111-5 %F 10_4153_CMB_1974_111_5