%0 Journal Article
%A V. P. Il'in
%A V. A. Solonnikov
%T Some properties of differentiable functions of many variables
%J Doklady Akademii Nauk
%D 1961
%P 538-541
%V 136
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1961_136_3_a5/
%G ru
%F DAN_1961_136_3_a5