%0 Journal Article
%A A. V. Knyazev
%T Sharp a priori error estimates of the Rayleigh--Ritz method without assumptions of fixed sign or compactness
%J Matematičeskie zametki
%D 1985
%P 900-907
%V 38
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_1985_38_6_a10/
%G ru
%F MZM_1985_38_6_a10