%0 Journal Article
%A E. A. Palyutin
%T A description of categorical positive Horn classes
%J Algebra i logika
%D 1980
%P 683-700
%V 19
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AL_1980_19_6_a6/
%G ru
%F AL_1980_19_6_a6