Reference:

Teuvo Kohonen, Samuel Kaski, Krista Lagus, Jarkko Salojärvi, Vesa Paatero, and Antti Saarela. Organization of a massive document collection. IEEE Transactions on Neural Networks, Special Issue on Neural Networks for Data Mining and Knowledge Discovery, 11(3):574–585, May 2000.

Suggested BibTeX entry:

@article{Kohonen00trnn,
    author = {Teuvo Kohonen and Samuel Kaski and Krista Lagus and Jarkko Salojärvi and Vesa Paatero and Antti Saarela},
    journal = {{IEEE} Transactions on Neural Networks, Special Issue on Neural Networks for Data Mining and Knowledge Discovery},
    month = {May},
    number = {3},
    pages = {574--585},
    title = {Organization of a Massive Document Collection},
    volume = {11},
    year = {2000},
}