%0 Journal Article
%A A. Varisco
%A A. Cherubini
%T On conditionally commutative semigroups.
%J Semigroup forum
%D 1981
%P 15-24
%V 23
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SF_1981__23_134500/
%F SF_1981__23_134500