@BOOK\{IMM2005-04190,
    author       = "K. Dueholm and M. Laurentzius and A. B. O. Jensen",
    title        = "{GPS,} 3. udg.",
    year         = "2005",
    keywords     = "GNNS,GPS",
    volume       = "",
    number       = "",
    series       = "",
    publisher    = "Nyt Teknisk Forlag",
    address      = "",
    edition      = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/4190-full.html",
    isbn_issn    = "87-571-2555-4"
}