TY - JOUR AU - V. I. Bernik AU - B. I. Ptashnic AU - B. O. Salyga TI - An analogue of the multipoint problem for a hyperbolic equation with constant coefficients JO - Differencialʹnye uravneniâ PY - 1977 SP - 637 EP - 645 VL - 13 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1977_13_4_a6/ LA - ru ID - DE_1977_13_4_a6 ER -