Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1971_7_5_a11, author = {V. B. Demidovich}, title = {Regular linear difference systems}, journal = {Differencialʹnye uravneni\^a}, pages = {902--909}, publisher = {mathdoc}, volume = {7}, number = {5}, year = {1971}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1971_7_5_a11/} }
V. B. Demidovich. Regular linear difference systems. Differencialʹnye uravneniâ, Tome 7 (1971) no. 5, pp. 902-909. http://geodesic.mathdoc.fr/item/DE_1971_7_5_a11/