%0 Journal Article
%A A.H. Clifford
%T The partial groupoid of idempotents of a regular semigroup.
%J Semigroup forum
%D 1975
%P 262-268
%V 10
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SF_1975__10_134118/
%F SF_1975__10_134118