%0 Journal Article
%A M. I. Vishik
%A G. I. Èskin
%T Singular elliptic equations and systems of variable order
%J Doklady Akademii Nauk
%D 1964
%P 243-246
%V 156
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1964_156_2_a1/
%G ru
%F DAN_1964_156_2_a1