%0 Journal Article
%A George M. Bergman
%T Hyperidentities of groups and semigroups. (Short Communication).
%J Aequationes mathematicae
%D 1981
%P 315-317
%V 22
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AM2_1981__22_136883/
%F AM2_1981__22_136883