%0 Journal Article
%A A. A. Stepanova
%T Groupoids of rank $2$ generating categorical Horn classes
%J Algebra i logika
%D 1984
%P 193-207
%V 23
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AL_1984_23_2_a5/
%G ru
%F AL_1984_23_2_a5