Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1992_324_6_a5, author = {M. M. Khapaev}, title = {Singular differential equations in control problems with}, journal = {Doklady Akademii Nauk}, pages = {1166--1168}, publisher = {mathdoc}, volume = {324}, number = {6}, year = {1992}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1992_324_6_a5/} }
M. M. Khapaev. Singular differential equations in control problems with. Doklady Akademii Nauk, Tome 324 (1992) no. 6, pp. 1166-1168. http://geodesic.mathdoc.fr/item/DAN_1992_324_6_a5/