%0 Journal Article
%T Gorokhovik Valentin Vikent'evich
%J Journal of the Belarusian State University. Mathematics and Informatics
%D 2019
%P 93-95
%V 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/BGUMI_2019_1_a11/
%G ru
%F BGUMI_2019_1_a11