@article{DE_1999_35_7_a12,
     author = {I. V. Gaishun},
     title = {Canonical forms of linear discrete two-parameter systems},
     journal = {Differencialʹnye uravneni\^a},
     pages = {964--968},
     publisher = {mathdoc},
     volume = {35},
     number = {7},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1999_35_7_a12/}
}