Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_1959_5_a12, author = {N. N. Krasovskii}, title = {Optimal regulation in non-linear systems}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {122--130}, publisher = {mathdoc}, number = {5}, year = {1959}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1959_5_a12/} }
N. N. Krasovskii. Optimal regulation in non-linear systems. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 5 (1959), pp. 122-130. http://geodesic.mathdoc.fr/item/IVM_1959_5_a12/