%0 Journal Article %A A. I. Kolosov %T An approach to the study of monotone solutions of $n$th-order nonlinear ordinary differential equations %J Differencialʹnye uravneniâ %D 1979 %P 392-397 %V 15 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1979_15_3_a1/ %G ru %F DE_1979_15_3_a1