@CONFERENCE\{IMM1993-06947,
    author       = "A. A. Nielsen",
    title        = "Multispectral and multitemporal change detection - new approaches",
    year         = "1993",
    month        = "may",
    edition      = "K. Rasmussen",
    pages        = "53",
    booktitle    = "Seminar on Satellite Remote Sensing of Environment and Agriculture in Developing Countries",
    volume       = "",
    series       = "",
    editor       = "",
    publisher    = "",
    organization = "",
    address      = "University of  Copenhagen, Department of Geography, Denmark",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/6947-full.html"
}