Reference:

Teuvo Kohonen, Samuel Kaski, Krista Lagus, Jarkko Salojärvi, Jukka Honkela, Vesa Paatero, and Antti Saarela. Self organization of a massive text document collection. In Erkki Oja and Samuel Kaski, editors, Kohonen Maps, pages 171–182. Elsevier, Amsterdam, 1999.

Suggested BibTeX entry:

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