TY - JOUR AU - A. N. Degtev TI - Computable numberings to which noncomputable numberings are positively reducible JO - Matematičeskie zametki PY - 1987 SP - 723 EP - 728 VL - 42 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1987_42_5_a11/ LA - ru ID - MZM_1987_42_5_a11 ER -