@article{DAN_1958_120_2_a7,
     author = {S. N. Slugin},
     title = {A modification of the abstract analogue to {Chaplygin's} method},
     journal = {Doklady Akademii Nauk},
     pages = {256--258},
     publisher = {mathdoc},
     volume = {120},
     number = {2},
     year = {1958},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1958_120_2_a7/}
}