%0 Journal Article
%A K.P. Shum
%A R.Z. Zhang
%T Hereditary torsion classes of S-systems.
%J Semigroup forum
%D 1996
%P 253-270
%V 52
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SF_1996__52_3_135453/
%F SF_1996__52_3_135453