@MISC\{IMM2000-0181,
    author       = "K. B. Hilger and A. A. Nielsen",
    title        = "Unsupervised Fuzzy Clustering of Multivariate Image Data",
    year         = "2000",
    publisher    = "",
    address      = "Roskilde University Center, Denmark",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/181-full.html"
}