%0 Journal Article
%A Yu. D. Burago
%T On proportional approximation of a~metric
%J Informatics and Automation
%D 1965
%P 120-123
%V 76
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TRSPY_1965_76_a9/
%G ru
%F TRSPY_1965_76_a9