%0 Journal Article %A Dumesnil, Jill A. %T On $m$-semigroups %J Czechoslovak Mathematical Journal %D 1997 %P 33-45 %V 47 %N 1 %U http://geodesic.mathdoc.fr/item/CMJ_1997_47_1_a2/ %G en %F CMJ_1997_47_1_a2