%0 Journal Article
%A Walter Benz
%T On a functional equation arising from hyperbolic geometry.
%J Aequationes mathematicae
%D 1980
%P 113-119
%V 21
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AM2_1980__21_182422/
%F AM2_1980__21_182422