@article{DE_1969_5_3_a6,
     author = {P. S. Belevets},
     title = {A global qualitative picture of a certain dynamical system},
     journal = {Differencialʹnye uravneni\^a},
     pages = {473--478},
     publisher = {mathdoc},
     volume = {5},
     number = {3},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1969_5_3_a6/}
}