TY - JOUR AU - M. Kuczma TI - On some set classes occurring in the theory of convex functions JO - Commentationes Mathematicae PY - 1973 SP - 127 EP - 135 VL - 17 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.14708/cm.v17i1.5758/ DO - 10.14708/cm.v17i1.5758 LA - pl ID - 10_14708_cm_v17i1_5758 ER -