@CONFERENCE\{IMM2006-04497,
    author       = "E. Holst and H. Rootz\'{e}n",
    title        = "Classifications - basic statistical considerations",
    year         = "2006",
    booktitle    = "Symposium i anvendt statistik",
    volume       = "",
    series       = "",
    editor       = "",
    publisher    = "Danmarks Statistik og {IMM,} {DTU}",
    organization = "",
    address      = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/4497-full.html"
}