%0 Journal Article %A M. A. Veliev %T The stability of the Bubnov--Galerkin method for first order equations with variable coefficients in Hilbert space %J Differencialʹnye uravneniâ %D 1969 %P 479-487 %V 5 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1969_5_3_a7/ %G ru %F DE_1969_5_3_a7