%0 Journal Article
%A T. Nordahl
%T Periodic weakly-cancellative semigroups.
%J Semigroup forum
%D 1976
%P 219-220
%V 13
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SF_1976__13_134214/
%F SF_1976__13_134214