An analogue of the Gauss summation formula for hypergeometric functions related to root systems. E.M. Opdam — 1993 Mathematische Zeitschrift
A remark on the irreducible characters and fake degrees of finite real reflection groups. E.M. Opdam — 1995 Inventiones mathematicae
Variation on a theme of MacDonald. R. Brussee; G.J. Heckmann; E.M. Opdam — 1991 Mathematische Zeitschrift