Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1994_30_11_a12, author = {A. V. Pukhlikov}, title = {Liouville's theorem in optimal control problems}, journal = {Differencialʹnye uravneni\^a}, pages = {1958--1965}, publisher = {mathdoc}, volume = {30}, number = {11}, year = {1994}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1994_30_11_a12/} }
A. V. Pukhlikov. Liouville's theorem in optimal control problems. Differencialʹnye uravneniâ, Tome 30 (1994) no. 11, pp. 1958-1965. http://geodesic.mathdoc.fr/item/DE_1994_30_11_a12/