%0 Journal Article
%A R. S. Sadyrkhanov
%T A finite-to-one covering map criterion
%J Doklady Akademii Nauk
%D 1983
%P 54-58
%V 273
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1983_273_1_a11/
%G ru
%F DAN_1983_273_1_a11