TY - JOUR AU - V. V. Škira TI - Universal functions for certain classes of recursive functions and sets JO - Informatics and Automation PY - 1973 SP - 243 EP - 250 VL - 133 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TRSPY_1973_133_a21/ LA - ru ID - TRSPY_1973_133_a21 ER -