RT Journal Article SR 00 A1 Adan, I.J.B.F. A1 Houtum, G.J. van A1 Wessels, J. A1 Zijm, W.H.M. T1 On the precedence relation method for deriving flexible bound models for queueing systems JF Kwantitatieve Methoden YR 1996 FD 1996 VO 17 IS 51 SP 27 OP 36 SN 1380-4162 LK https://pure.iiasa.ac.at/id/eprint/4640/