%0 Journal Article %A Stanko Bilinski %T Linearly additive functions of two indices. (Short Communication). %J Aequationes mathematicae %D 1975 %P 319-320 %V 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/AM2_1975__12_136521/ %F AM2_1975__12_136521