%0 Journal Article %A A. A. Aizikovich %T The Pólya–Mammana factorization of a linear matrix difference operator. I %J Differencialʹnye uravneniâ %D 1978 %P 328-337 %V 14 %N 2 %U http://geodesic.mathdoc.fr/item/DE_1978_14_2_a13/ %G ru %F DE_1978_14_2_a13