%0 Journal Article
%A M. Petrich
%T A simple construction of semigroups all of whose subsemigroups are left ideals.
%J Semigroup forum
%D 1972
%P 262-266
%V 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SF_1972__4_133904/
%F SF_1972__4_133904