%0 Journal Article
%A G. V. Bushmanova
%A A. P. Norden
%T A polar normalization of surfaces and a congruence of circles in the conformal plane
%J Učënye zapiski Kazanskogo universiteta. Seriâ Fiziko-matematičeskie nauki
%D 1970
%P 22-32
%V 129
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/UZKU_1970_129_6_a2/
%G ru
%F UZKU_1970_129_6_a2