TY - JOUR AU - M. I. Kanovich TI - Reducibility via general recursive operators JO - Doklady Akademii Nauk PY - 1983 SP - 793 EP - 796 VL - 273 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1983_273_4_a4/ LA - ru ID - DAN_1983_273_4_a4 ER -