TY - JOUR AU - V. S. Ryaben'kii TI - Green's formula for systems of difference equations with constant coefficients JO - Matematičeskie zametki PY - 1969 SP - 615 EP - 622 VL - 5 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1969_5_5_a14/ LA - ru ID - MZM_1969_5_5_a14 ER -