Baccelli, F.; Courcoubetis, C.A.; Reiman, M.I. - In: Stochastic Processes and their Applications 26 (1987), pp. 257-265
We consider a queueing system with N servers and two types of customers: Simple customers which require a service from one of the N servers and Locking customers which have to be served simultaneously by all N servers. Loyne's increasing schema is generalized to this type of queueing system....