%0 Journal Article
%A P.A. Grillet
%T The number of commutative semigroups of order N.
%J Semigroup forum
%D 1995
%P 317-326
%V 50
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SF_1995__50_3_135390/
%F SF_1995__50_3_135390