%0 Journal Article
%A V. M. Isakov
%T Inverse theorems on the smoothness of potentials
%J Differencialʹnye uravneniâ
%D 1975
%P 66-74
%V 11
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1975_11_1_a8/
%G ru
%F DE_1975_11_1_a8