@MISC\{IMM1999-03088,
    author       = "A. A. Nielsen",
    title        = "Orthogonal Transformations",
    year         = "1999",
    pages        = "13",
    publisher    = "{IMM,} {DTU}",
    address      = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/3088-full.html"
}