%0 Journal Article %A Karol Baron %T On approximate solutions of a system of functional equations %J Annales Polonici Mathematici %D 1983 %P 305-316 %V 43 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-43-3-305-316/ %R 10.4064/ap-43-3-305-316 %G en %F 10_4064_ap_43_3_305_316