TY - JOUR AU - Adam Bobrowski AU - Ma/lgorzata Kubali/nska TI - On a functional equation with derivative and symmetrization JO - Annales Polonici Mathematici PY - 2006 SP - 13 EP - 24 VL - 89 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/ap89-1-2/ DO - 10.4064/ap89-1-2 LA - en ID - 10_4064_ap89_1_2 ER -