%0 Journal Article %A O.S. Rothaus %T Semigroups of finite matrices. %J Semigroup forum %D 1994 %P 59-66 %V 49 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/SF_1994__49_2_135334/ %F SF_1994__49_2_135334