%0 Journal Article %A Nasr-Isfahani, A. %T Representations and Positive Definite Functions on Hypergroups %J Serdica Mathematical Journal %D 1999 %P 283-296 %V 25 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/SMJ2_1999_25_4_a1/ %G en %F SMJ2_1999_25_4_a1