%0 Journal Article
%A K. Todorov
%T On the orders of the subsemigroups of the symmetrical semigroup Jn.
%J Semigroup forum
%D 1980
%P 329-336
%V 21
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SF_1980__21_134455/
%F SF_1980__21_134455