%0 Journal Article
%A J. A. Gerhard
%T Semigroups with idempotent powers, II: The lattices of equational subclasses of  [(xy2 =xy] .
%J Semigroup forum
%D 1977
%P 375-388
%V 14
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SF_1977__14_186378/
%F SF_1977__14_186378