info:oai:pure.iiasa.ac.at:4640info:ofi/fmt:xml:xsd:journalAdanI.J.B.F.Adan, I.J.B.F.HoutumG.J. vanHoutum, G.J. vanWesselsJ.Wessels, J.ZijmW.H.M.Zijm, W.H.M.511719961380-4162On the precedence relation method for deriving flexible bound models for queueing systemsKwantitatieve Methoden27-36article