%0 Journal Article %A B. A. Bel'tyukov %A N. N. Kochetkov %T The method of Volterra integral equations in eigenvalue problems with several parameters %J Differencialʹnye uravneniâ %D 1973 %P 922-930 %V 9 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1973_9_5_a15/ %G ru %F DE_1973_9_5_a15