TY - JOUR AU - E. I. Moiseev AU - V. V. Tikhomirov AU - E. A. Kozlov TI - A mean value formula for the regular solution of a hyperbolic equation JO - Differencialʹnye uravneniâ PY - 1983 SP - 1802 EP - 1803 VL - 19 IS - 10 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1983_19_10_a21/ LA - ru ID - DE_1983_19_10_a21 ER -