%0 Journal Article %A G. V. Zhdanova %T The asymptotics of the eigenvalues of a selfadjoint second order singular operator %J Differencialʹnye uravneniâ %D 1970 %P 838-851 %V 6 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1970_6_5_a7/ %G ru %F DE_1970_6_5_a7