%0 Journal Article
%T Sessions of the seminar “Algebra i Logika”
%J Algebra i logika
%D 2020
%P 606-608
%V 59
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AL_2020_59_5_a7/
%G ru
%F AL_2020_59_5_a7