%0 Journal Article
%T Kharin Yuriy Semenovich
%J Journal of the Belarusian State University. Mathematics and Informatics
%D 2020
%P 80-81
%V 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/BGUMI_2020_1_a9/
%G ru
%F BGUMI_2020_1_a9