@CONFERENCE\{IMM1986-01067,
    author       = "K. Conradsen and B. K. Ersb{\o}ll",
    title        = "The use of additional variables i classification of image data",
    year         = "1986",
    month        = "may",
    pages        = "4",
    booktitle    = "Adaptive Image Analysis Symposium, Heriot-Watt University",
    volume       = "",
    series       = "",
    editor       = "",
    publisher    = "",
    organization = "",
    address      = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/1067-full.html"
}