@MISC\{IMM2005-03649,
    author       = "M. S. Pedersen and J. Larsen and U. Kjems",
    title        = "On the difference between updating the mixing matrix and updating the separation matrix",
    year         = "2005",
    month        = "mar",
    publisher    = "",
    address      = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/3649-full.html"
}