TY - JOUR AU - I. G. Perfil'eva TI - Representation of functions in $P_{\aleph_0}$ by superpositions of one-place functions and addition JO - Matematičeskie zametki PY - 1983 SP - 727 EP - 733 VL - 34 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1983_34_5_a8/ LA - ru ID - MZM_1983_34_5_a8 ER -