Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1969_5_3_a2, author = {E. H. Al'brekht}, title = {The optimal control of the motion of quasilinear systems}, journal = {Differencialʹnye uravneni\^a}, pages = {430--442}, publisher = {mathdoc}, volume = {5}, number = {3}, year = {1969}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1969_5_3_a2/} }
E. H. Al'brekht. The optimal control of the motion of quasilinear systems. Differencialʹnye uravneniâ, Tome 5 (1969) no. 3, pp. 430-442. http://geodesic.mathdoc.fr/item/DE_1969_5_3_a2/