@article{DE_1972_8_9_a24,
     author = {V. F. Filiptsov},
     title = {Investigation of the trajectories of a certain dynamical system},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1709--1712},
     publisher = {mathdoc},
     volume = {8},
     number = {9},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1972_8_9_a24/}
}