%0 Journal Article
%T Sessions of the Seminar “Algebra i Logika”
%J Algebra i logika
%D 2021
%P 658-659
%V 60
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AL_2021_60_6_a9/
%G ru
%F AL_2021_60_6_a9