%0 Journal Article
%A G. Thierrin
%A C.M. Reis
%A Y.Q. Guo
%T Relatively f-disjunctive languages.
%J Semigroup forum
%D 1988
%P 289-300
%V 37
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SF_1988__37_1_134932/
%F SF_1988__37_1_134932