%0 Journal Article
%A P.G. Trotter
%T Projectives in inverse semigroups.
%J Semigroup forum
%D 1983
%P 167-190
%V 26
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SF_1983__26_134601/
%F SF_1983__26_134601