TY - JOUR AU - Ha Huy Bang AU - Yu. F. Korobeinik TI - The applicability of composite differential operators to some classes of exponential functions JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 1982 SP - 83 EP - 85 IS - 7 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_1982_7_a16/ LA - ru ID - IVM_1982_7_a16 ER -