TY - JOUR AU - B. Z. Royhel TI - On an inverse problem for an equation of hyperbolic type JO - Differencialʹnye uravneniâ PY - 1990 SP - 1462 EP - 1464 VL - 26 IS - 8 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1990_26_8_a26/ LA - ru ID - DE_1990_26_8_a26 ER -