Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1987_23_9_a15, author = {V. M. Filippov}, title = {Semibounded solutions of inverse problems of the calculus of variations}, journal = {Differencialʹnye uravneni\^a}, pages = {1599--1607}, publisher = {mathdoc}, volume = {23}, number = {9}, year = {1987}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1987_23_9_a15/} }
V. M. Filippov. Semibounded solutions of inverse problems of the calculus of variations. Differencialʹnye uravneniâ, Tome 23 (1987) no. 9, pp. 1599-1607. http://geodesic.mathdoc.fr/item/DE_1987_23_9_a15/