@TECHREPORT\{IMM1999-01705,
    author       = "P. Sadegh and H. A. Nielsen and H. Madsen",
    title        = "A Semi-parametric Approach for Decomposition of Absorption  Spectra in the Presence of Unknown Components",
    year         = "1999",
    number       = "17",
    series       = "",
    institution  = "Department of Mathematical Modelling, Technical University of Denmark, {DK-}2800 Lyngby, Denmark",
    address      = "",
    type         = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/1705-full.html"
}