%0 Journal Article %A Yu. A. Klokov %T Upper and Lower Functions in Boundary Value Problems for a Third-Order Ordinary Differential Equation %J Differencialʹnye uravneniâ %D 2000 %P 1607-1614 %V 36 %N 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_2000_36_12_a2/ %G ru %F DE_2000_36_12_a2