%0 Journal Article
%A B.-W. Schulze
%T The inverse problem for higher order elliptic equations
%J Differencialʹnye uravneniâ
%D 1977
%P 2265-2271
%V 13
%N 12
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1977_13_12_a16/
%G ru
%F DE_1977_13_12_a16