%0 Journal Article %A R. Z. Dautov %A A. D. Lyashko %A S. I. Solov'ev %T Convergence of the Bubnov--Galerkin method with perturbations for symmetric spectral problems with nonlinear appearance of the parameter %J Differencialʹnye uravneniâ %D 1991 %P 1144-1153 %V 27 %N 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1991_27_7_a5/ %G ru %F DE_1991_27_7_a5