Addendum: Representations of quantum algebras
It has been pointed out to the authors that in Section 5 of the above paper [Invent. Math. 104, 1-59 (1991; Zbl 0724.17012)] they are implicitly using a non-obvious Mackey type result when they apply the results of Section 4. Here they show that the result they need follows in fact quite easily from arguments in their paper.
scientific article; zbMATH DE number 784008