%0 Journal Article
%A L. D. Ivanov
%T Smooth mappings of the space $R_n$ into $R_1$
%J Doklady Akademii Nauk
%D 1964
%P 258-261
%V 155
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1964_155_2_a3/
%G ru
%F DAN_1964_155_2_a3