@article{DAN_1960_133_4_a4,
     author = {V. V. Kazakevich},
     title = {Extremum control of objects with inertia and of unstable objects},
     journal = {Doklady Akademii Nauk},
     pages = {756--759},
     publisher = {mathdoc},
     volume = {133},
     number = {4},
     year = {1960},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1960_133_4_a4/}
}