TY - JOUR AU - A. G. Megrabov TI - A group approach to inverse problems for differential equations JO - Doklady Akademii Nauk PY - 1984 SP - 583 EP - 586 VL - 275 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1984_275_3_a16/ LA - ru ID - DAN_1984_275_3_a16 ER -