@article{DE_1967_3_3_a2,
     author = {V. G. Boltyanskii and G. Nasritdinov},
     title = {The synthesis of optimal controls in nonlinear oscillatory systems of second order},
     journal = {Differencialʹnye uravneni\^a},
     pages = {380--394},
     publisher = {mathdoc},
     volume = {3},
     number = {3},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1967_3_3_a2/}
}