%0 Journal Article %A T.M. Bisgaard %T Separation by characters or positive definite functions. %J Semigroup forum %D 1996 %P 317-320 %V 53 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/SF_1996__53_2_135494/ %F SF_1996__53_2_135494