%0 Journal Article
%A D.W. Hardy
%A Y. Tirasupa
%T Semilattices of proper inverse semigroups.
%J Semigroup forum
%D 1976
%P 29-36
%V 13
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SF_1976__13_134194/
%F SF_1976__13_134194