%0 Journal Article
%A M. Kuczma
%T On a characterization of the cosine
%J Annales Polonici Mathematici
%D 1964
%P 53-57
%V 16
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/ap-16-1-53-57/
%R 10.4064/ap-16-1-53-57
%G en
%F 10_4064_ap_16_1_53_57