http://arxiv.org/abs/1405.4887 in the case of SU(3), the lists of multiplicities, in the tensor products lambda x mu and lambda x bar{mu}, are identical up to permutations
http://arxiv.org/abs/0709.0105 Representations and characters of the Virasoro algebra and N=1 super-Virasoro algebras (nice discussion of (super)Virasoro and their reducible reps Verma modules)
This issue is meant to collect possibly interesting references for this project. They will be deleted from here as they are incorporated elsewhere.