TY - JOUR AU - Schoenberg, I. J. TI - Arithmetic problems concerning Cauchy's functional equation JO - Compositio Mathematica PY - 1964 SP - 169 EP - 175 VL - 16 PB - Kraus Reprint UR - http://www.numdam.org/item/CM_1964__16__169_0/ LA - en ID - CM_1964__16__169_0 ER -