@MISC\{IMM1993-0675,
    author       = "H. B. Nielsen and P. G. Thomsen",
    title        = "Numeriske Metoder for S{\ae}dvanlige Differentialligninger",
    year         = "1993",
    edition      = "2.",
    pages        = "44",
    publisher    = "Informatics and Mathematical Modelling, Technical University of Denmark, {DTU}",
    address      = "Richard Petersens Plads, Building 321, {DK-}2800 Kgs. Lyngby",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/675-full.html"
}