@CONFERENCE\{IMM1997-01696,
    author       = "H. A. Nielsen and T. S. Nielsen and H. Madsen",
    title        = "ARX-models with parameter variations estimated by
 local fitting",
    year         = "1997",
    pages        = "475-480",
    booktitle    = "11th {IFAC} Symposium on System Identification",
    volume       = "2",
    series       = "",
    editor       = "Yoshikazu Sawaragi and Setsuo Sagara",
    publisher    = "",
    organization = "",
    address      = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/1696-full.html"
}