@techreport{
    Lagus00.tr,
    author = "Lagus, Krista",
    title = "Text retrieval using self-organized document maps",
    address = "Espoo, Finland",
    number = "A61",
    month = "August",
    flags = "copy",
    year = "2000",
    type = "Technical report",
    institution = "Helsinki University of Technology, Laboratory of Computer and Information Science"
}