@CONFERENCE\{IMM1990-02925,
    author       = "H. Madsen and B. F. Nielsen",
    title        = "The Use of Phase-Type Distributions for Modelling Packet-Switched Traffic",
    year         = "1990",
    month        = "aug",
    pages        = "V.4I.1-VI.4",
    booktitle    = "NTS-9",
    volume       = "",
    series       = "",
    editor       = "",
    publisher    = "",
    organization = "",
    address      = "Oslo",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/2925-full.html"
}