%0 Journal Article
%A P.E.T. Jorgensen
%A X.C. Quan
%T Positivity and cohomology for involutive semigroups.
%J Semigroup forum
%D 1993
%P 60-80
%V 47
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SF_1993__47_2_135254/
%F SF_1993__47_2_135254