%0 Journal Article %A Alda, Václav %T On a functional equation %J Applications of Mathematics %D 1971 %P 448-451 %V 16 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1971.103380/ %R 10.21136/AM.1971.103380 %G en %F 10_21136_AM_1971_103380