%0 Journal Article %A Lal, Harbans %T Radicals in Quasi-Commutative Semigroups %J Mathematica slovaca %D 1975 %P 287-288 %V 25 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/MASLO_1975__25_3_a11/ %G en %F MASLO_1975__25_3_a11