%0 Journal Article %A A. B. Vasil'eva %A V. F. Butuzov %T Certain problems on eigenvalues for integro-differential equations with a small parameter coefficient for the higher derivative %J Differencialʹnye uravneniâ %D 1965 %P 1190-1203 %V 1 %N 9 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1965_1_9_a6/ %G ru %F DE_1965_1_9_a6