%0 Journal Article %A Yu. N. Sudarev %T The distribution of eigenvalues of a singular opeator %J Differencialʹnye uravneniâ %D 1968 %P 1676-1682 %V 4 %N 9 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1968_4_9_a13/ %G ru %F DE_1968_4_9_a13