%0 Journal Article %A Ketkar, R. D. %A Vanaja, N. %T R -Projective Modules over a Semiperfect Ring %J Canadian mathematical bulletin %D 1981 %P 365-367 %V 24 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1981-055-x/ %R 10.4153/CMB-1981-055-x %F 10_4153_CMB_1981_055_x