%0 Journal Article
%T Sessions of the seminar “Algebra i Logika”
%J Algebra i logika
%D 1990
%P 258
%V 29
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AL_1990_29_2_a9/
%G ru
%F AL_1990_29_2_a9