%0 Journal Article
%A E. P. Eroshenkov
%A T. Sh. Kal'menov
%T Completeness of the root vectors of the elliptic Bitsadze–Samarskii problem
%J Doklady Akademii Nauk
%D 1987
%P 528-531
%V 296
%N 3
%U http://geodesic.mathdoc.fr/item/DAN_1987_296_3_a2/
%G ru
%F DAN_1987_296_3_a2