%0 Journal Article
%A Czeslaw Dyjak
%T On A Characterization Of Trigonometrical And Hyperbolic Functions By Functional Equations
%J Publications de l'Institut Mathématique
%D 1982
%P 45 
%V _N_S_32
%N 46
%I mathdoc
%U http://geodesic.mathdoc.fr/item/PIM_1982_N_S_32_46_a7/
%F PIM_1982_N_S_32_46_a7