@incollection{
    Kohonen99,
    editor = "Oja, Erkki and Kaski, Samuel",
    author = "Kohonen, Teuvo and Kaski, Samuel and Lagus, Krista and Salojärvi, Jarkko and Honkela, Jukka and Paatero, Vesa and Saarela, Antti",
    publisher = "Elsevier",
    title = "Self organization of a massive text document collection",
    booktitle = "Kohonen Maps",
    address = "Amsterdam",
    flags = "copy",
    year = "1999",
    pages = "171-182"
}