%0 Journal Article %A Denis Thérien %T On the equation xt- » xt+q in categories. %J Semigroup forum %D 1988 %P 265-272 %V 37 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/SF_1988__37_1_134930/ %F SF_1988__37_1_134930