%0 Journal Article
%A Ya. A. Roitberg
%A Z. G. Sheftel
%T On equations of elliptic type with discontinuous coefficients
%J Doklady Akademii Nauk
%D 1962
%P 1275-1278
%V 146
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1962_146_6_a7/
%G ru
%F DAN_1962_146_6_a7