%0 Journal Article %A S. N. Olekhnik %T The boundedness of the solutions of a certain second order differential equation %J Differencialʹnye uravneniâ %D 1973 %P 1994-1999 %V 9 %N 11 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1973_9_11_a7/ %G ru %F DE_1973_9_11_a7