@CONFERENCE\{IMM2001-0552,
    author       = "T. K. Christensen and B. F. Nielsen and V. B. Iversen",
    title        = "Distribution of Channel Holding Times in Cellular Communication Systems",
    year         = "2001",
    month        = "oct",
    keywords     = "cellular communication systems, mobility, channel holding time, cell resistence time, call holding time, phase-type distributions",
    pages        = "471-480",
    booktitle    = "International Teletrafic Congress, {ITC-}17",
    volume       = "4",
    series       = "Teletrafic Science and Engineering",
    editor       = "Jorge Moreira de Souza, Nelson L.S. da Fonseca, Edmundo A. de Souza E Silva",
    publisher    = "Elsevier",
    organization = "",
    address      = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/552-full.html",
    isbn_issn    = "{ISBN} 0 444 50911 9"
}