TY - JOUR AU - Carl Jockusch TI - Recursiveness of initial segments of Kleene's O JO - Fundamenta Mathematicae PY - 1975 SP - 161 EP - 167 VL - 87 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/fm-87-2-161-167/ DO - 10.4064/fm-87-2-161-167 LA - en ID - 10_4064_fm_87_2_161_167 ER -