TY - JOUR AU - A. F. Filippov TI - On the first boundary problem for a~hyperbolic equation in an arbitrary cylinder JO - Matematičeskie zametki PY - 1968 SP - 181 EP - 189 VL - 4 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1968_4_2_a9/ LA - ru ID - MZM_1968_4_2_a9 ER -