%0 Journal Article %A A. V. Gulin %A A. V. Kregzhde %A N. P. Savenkova %T Difference methods for solving some spectral problems %J Differencialʹnye uravneniâ %D 1983 %P 1207-1215 %V 19 %N 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1983_19_7_a11/ %G ru %F DE_1983_19_7_a11