@TECHREPORT\{IMM1995-02562,
    author       = "J. Iwersen and P. Thyregod",
    title        = "A Cusum Chart for Monitoring Process Variability",
    year         = "1995",
    pages        = "20 pp.",
    number       = "",
    series       = "",
    institution  = "",
    address      = "",
    type         = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/2562-full.html",
    isbn_issn    = "IMM-REP-1995-6"
}