%0 Journal Article
%A A. A. Novruzov
%T On some problems of the qualitative theory of linear and quasi-linear elliptic equations of second order
%J Doklady Akademii Nauk
%D 1972
%P 1053-1056
%V 204
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1972_204_5_a6/
%G ru
%F DAN_1972_204_5_a6