%0 Journal Article
%A Faulkner, G. D.
%A Shonkwiler, R. W.
%T Cosine Representations of Abelian *-Semigroups and Generalized Cosine Operator Functions
%J Canadian journal of mathematics
%D 1978
%P 474-482
%V 30
%N 3
%U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1978-042-3/
%R 10.4153/CJM-1978-042-3
%F 10_4153_CJM_1978_042_3