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@article{MZM_1970_7_5_a13, author = {V. S. Ryaben'kii}, title = {Certain problems of the theory of difference boundary value problems}, journal = {Matemati\v{c}eskie zametki}, pages = {655--663}, publisher = {mathdoc}, volume = {7}, number = {5}, year = {1970}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1970_7_5_a13/} }
V. S. Ryaben'kii. Certain problems of the theory of difference boundary value problems. Matematičeskie zametki, Tome 7 (1970) no. 5, pp. 655-663. http://geodesic.mathdoc.fr/item/MZM_1970_7_5_a13/