%0 Journal Article
%A A. Toraev
%T Oscillation of elliptic operators and the structure of their
%J Doklady Akademii Nauk
%D 1984
%P 306-309
%V 279
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1984_279_2_a10/
%G ru
%F DAN_1984_279_2_a10