Laoucine Kerbache, Mario Norbis, Jose A. Gonzalez. Optimal server assignment for a multiple customer classes problem.
IMA Journal of Management Mathematics, Oxford University Press (OUP), 2004, 15 (3), pp.195-210.
⟨10.1093/imaman/15.3.195⟩.
⟨hal-00465145⟩