TY - JOUR AU - Yung-Ming Chen TI - On two-functional spaces JO - Studia Mathematica PY - 1964 SP - 61 EP - 88 VL - 24 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/sm-24-1-61-88/ DO - 10.4064/sm-24-1-61-88 LA - en ID - 10_4064_sm_24_1_61_88 ER -