%0 Journal Article
%A T. O. Shaposhnikova
%T A~priori estimates of the error of the Ritz method in the eigenvalue problem of degenerate higher order elliptic operators
%J Izvestiâ vysših učebnyh zavedenij. Matematika
%D 1973
%P 99-108
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IVM_1973_5_a13/
%G ru
%F IVM_1973_5_a13