TY - JOUR AU - Karol Baron TI - On orthogonally additive functions with orthogonally additive second iterate JO - Commentationes Mathematicae PY - 2013 SP - 401−404 VL - 53 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.14708/cm.v53i2.799/ DO - 10.14708/cm.v53i2.799 LA - pl ID - 10_14708_cm_v53i2_799 ER -