1. C. Bisdikian, A queueing model with applications to bridges and the DQDB (IEEE 802.6) MAN, Report, IBM Thomas J. Watson Research Center, RC 15218, Yorktown Heights, NY (1989).
2. D. Grillo, Polling mechanism models in communication systems ? some application examples, in:Stochastic Analysis of Computer and Communication Systems, ed. H. Takagi (North-Holland, Amsterdam, 1990), pp. 659?698.
3. H. Levy and M. Sidi, Polling systems: Applications, modelling and optimization, IEEE Trans. Commun. COM-38(1990)1750?1760.
4. J.A.C. Resing, Polling systems and multitype branching processes, Report CWI, BS-R9128.
5. H. Takagi, Queueing analysis of polling models: An update, in:Stochastic Analysis of Computer and Communication Systems, ed. H. Takagi (North-Holland, Amsterdam, 1990), pp. 267?318.