%0 Journal Article
%A Popescu, Gelu
%T Positive-Defininte Functions on Free Semigroups
%J Canadian journal of mathematics
%D 1996
%P 887-896
%V 48
%N 4
%U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1996-045-3/
%R 10.4153/CJM-1996-045-3
%F 10_4153_CJM_1996_045_3