%0 Journal Article
%A B. V. Fedosov
%T On the index of an elliptic operator in $R^n$ and an elliptic boundary- value problem
%J Doklady Akademii Nauk
%D 1972
%P 547-550
%V 207
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1972_207_3_a10/
%G ru
%F DAN_1972_207_3_a10