@MISC\{IMM2002-01464,
    author       = "K. Madsen and H. B. Nielsen",
    title        = "Supplementary Notes for Course 02611 Optimization and Data Fitting",
    year         = "2002",
    month        = "aug",
    keywords     = "data fitting, orthogonal transformation, Huber estimation, use of Matlab",
    pages        = "56",
    publisher    = "Informatics and Mathematical Modelling, Technical University of Denmark, {DTU}",
    address      = "Richard Petersens Plads, Building 321, {DK-}2800 Kgs. Lyngby",
    url          = "http://www.imm.dtu.dk/courses/02611/SN.pdf"
}