%0 Journal Article %A John Lawrence %T Orthogonality and additive functions on normed linear spaces %J Colloquium Mathematicum %D 1984 %P 253-255 %V 49 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-49-2-253-255/ %R 10.4064/cm-49-2-253-255 %G en %F 10_4064_cm_49_2_253_255