%0 Journal Article %A I. V. Kamenev %T A note on Nehari's nonoscillation theorem %J Differencialʹnye uravneniâ %D 1978 %P 2073 %V 14 %N 11 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1978_14_11_a17/ %G ru %F DE_1978_14_11_a17