@article{MZM_1969_5_5_a14,
     author = {V. S. Ryaben'kii},
     title = {Green's formula for systems of difference equations with constant coefficients},
     journal = {Matemati\v{c}eskie zametki},
     pages = {615--622},
     publisher = {mathdoc},
     volume = {5},
     number = {5},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1969_5_5_a14/}
}