%0 Journal Article %A Karol Baron %T On Extending of Solutions of a Functional Equation. (Short Communication). %J Aequationes mathematicae %D 1975 %P 114-115 %V 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/AM2_1975__12_136495/ %F AM2_1975__12_136495