@BOOK\{IMM1998-0969,
    author       = "J. M. Carstensen",
    title        = "Digital  Image Processing",
    year         = "1998",
    edition      = "3",
    volume       = "",
    number       = "",
    series       = "",
    publisher    = "Informatics and Mathematical Modelling, Technical University of Denmark",
    address      = "Lyngby",
    edition      = "3",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/969-full.html"
}