%0 Journal Article
%A T. Papazyan
%T Filters and semigroup properties.
%J Semigroup forum
%D 1990
%P 329-338
%V 41
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SF_1990__41_2_135057/
%F SF_1990__41_2_135057