@article{DE_1968_4_5_a12,
     author = {V. R. Petukhov},
     title = {Investigation of certain system of differential-functional equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {875--880},
     publisher = {mathdoc},
     volume = {4},
     number = {5},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1968_4_5_a12/}
}