%0 Journal Article %A Kapp, Kenneth M. %T On $n^\circ $-regular semigroups %J Czechoslovak Mathematical Journal %D 1974 %P 171-175 %V 24 %N 2 %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1974.101231/ %R 10.21136/CMJ.1974.101231 %G en %F 10_21136_CMJ_1974_101231