%0 Journal Article
%A V. V. Fedorchuk
%T Mappings which do not lower the dimension
%J Doklady Akademii Nauk
%D 1969
%P 54-57
%V 185
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1969_185_1_a13/
%G ru
%F DAN_1969_185_1_a13