%0 Journal Article %A V. A. Nikol'skii %T On the question of equivalent transformations of linear differential-difference equations with constant coefficients %J Differencialʹnye uravneniâ %D 1984 %P 1638-1640 %V 20 %N 9 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1984_20_9_a26/ %G ru %F DE_1984_20_9_a26