%0 Journal Article
%A M. N. Yakovlev
%T Estimates of the $H$-condition numbers of matrices in the Petrov--Galerkin method
%J Doklady Akademii Nauk
%D 1965
%P 309-310
%V 163
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1965_163_2_a10/
%G ru
%F DAN_1965_163_2_a10