@article{DE_1984_20_9_a26,
     author = {V. A. Nikol'skii},
     title = {On the question of equivalent transformations of linear differential-difference equations with constant coefficients},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1638--1640},
     publisher = {mathdoc},
     volume = {20},
     number = {9},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1984_20_9_a26/}
}