%0 Journal Article %A V. M. Filippov %T Semibounded solutions of inverse problems of the calculus of variations %J Differencialʹnye uravneniâ %D 1987 %P 1599-1607 %V 23 %N 9 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1987_23_9_a15/ %G ru %F DE_1987_23_9_a15