%0 Journal Article %A Y. Kobayashi %T The exponent semigroup of a semigroup satisfying (XY)3 = x3 Y3. %J Semigroup forum %D 1980 %P 323-330 %V 19 %I mathdoc %U http://geodesic.mathdoc.fr/item/SF_1980__19_134392/ %F SF_1980__19_134392