TY - JOUR AU - V. I. Belyi AU - Yu. I. Volkov TI - Some applications of integro-differential operators of arbitrary order in the theory of approximation of functions JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 1968 SP - 3 EP - 12 IS - 10 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_1968_10_a0/ LA - ru ID - IVM_1968_10_a0 ER -