@article{DE_1991_27_10_a19,
     author = {V. V. Amel'kin},
     title = {Differential systems with common trajectories},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1813--1814},
     publisher = {mathdoc},
     volume = {27},
     number = {10},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1991_27_10_a19/}
}