@article{MZM_1969_6_2_a13,
     author = {V. S. Ryaben'kii},
     title = {Systems of difference equations with localized effect of right side},
     journal = {Matemati\v{c}eskie zametki},
     pages = {249--255},
     publisher = {mathdoc},
     volume = {6},
     number = {2},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1969_6_2_a13/}
}