%0 Journal Article
%A V. A. Aleksandrov
%T On Efimov's theorem on differential tests for a homeomorphism
%J Sbornik. Mathematics
%D 1991
%P 197-202
%V 69
%N 1
%U http://geodesic.mathdoc.fr/item/SM_1991_69_1_a11/
%G en
%F SM_1991_69_1_a11