%0 Journal Article %A I. T. Kiguradze %T Conditions for non-oscillation of singular linear differential equations of second order %J Matematičeskie zametki %D 1969 %P 633-639 %V 6 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1969_6_5_a14/ %G ru %F MZM_1969_6_5_a14