@ARTICLE{RotLauKawBuh02b,
    author = "Roth, V. and Laub, J and Kawanabe, M. and Buhmann, J.M.",
    title = "Optimal Cluster Preserving Embedding of Non-Metric Proximity \ Data",
    journal = "IEEE Trans. PAMI",
    year = "2003",
    volume = "25",
    pages = "1540--1551",
    month = "December",
    issue = "12"
}