%0 Journal Article %A Müger, Michael %T On charged fields with group symmetry and degeneracies of Verlinde’s matrix $S^\ast $ %J Annales de l'I.H.P. Physique théorique %D 1999 %P 359-394 %V 71 %N 4 %I Gauthier-Villars %U http://www.numdam.org/item/AIHPA_1999__71_4_359_0/ %G en %F AIHPA_1999__71_4_359_0