%0 Journal Article
%A C.M. Campbell
%A E.F. Robertson
%A R.M. Thomas
%T On a class of semigroups with symmetric presentations.
%J Semigroup forum
%D 1993
%P 286-306
%V 46
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SF_1993__46_1_135237/
%F SF_1993__46_1_135237