%0 Journal Article %A Światak, Halina %T A Characterization of Exponential Functions with Non-Linear Exponents %J Canadian mathematical bulletin %D 1975 %P 277-281 %V 18 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1975-052-5/ %R 10.4153/CMB-1975-052-5 %F 10_4153_CMB_1975_052_5