@article{DE_1968_4_6_a8,
     author = {V. V. Amel'kin},
     title = {The behavior of the integral curves of a certain system of two differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1035--1042},
     publisher = {mathdoc},
     volume = {4},
     number = {6},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1968_4_6_a8/}
}