%0 Journal Article
%A Ilie Corovei
%T The cosine functional equation for nilpotent groups. (Short Communication).
%J Aequationes mathematicae
%D 1976
%P 511-511
%V 14
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AM2_1976__14_136619/
%F AM2_1976__14_136619