@article{DE_1968_4_2_a2,
     author = {V. P. Skripnik},
     title = {Certain systems with transformed argument in the case when the transformations of the argument depend on the time and on the solution},
     journal = {Differencialʹnye uravneni\^a},
     pages = {225--232},
     publisher = {mathdoc},
     volume = {4},
     number = {2},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1968_4_2_a2/}
}