%0 Journal Article
%A R. L. Frum-Ketkov
%T The behaviour of cycles in the continuous mapping of compacts
%J Doklady Akademii Nauk
%D 1957
%P 249-252
%V 115
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1957_115_2_a13/
%G ru
%F DAN_1957_115_2_a13