@article{DAN_1963_149_1_a14,
     author = {G. E. Kuzmak and V. K. Isaev and B. Kh. Davidson},
     title = {Optimal conditions for the motion of a point of variable mass in a homogeneous central field},
     journal = {Doklady Akademii Nauk},
     pages = {58--61},
     publisher = {mathdoc},
     volume = {149},
     number = {1},
     year = {1963},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1963_149_1_a14/}
}