@article{DE_1976_12_7_a19,
     author = {I. G. Kozhukh},
     title = {The behavior of the trajectories of a certain dynamical system in the {Poincar\'e} disc},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1306--1309},
     publisher = {mathdoc},
     volume = {12},
     number = {7},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1976_12_7_a19/}
}