Reference:

Timo Honkela, Samuel Kaski, Krista Lagus, and Teuvo Kohonen. Self-organizing maps of document collections. ALMA, 1(2), 1996. Electronic Journal, address http://www.diemme.it/ luigi/alma.html.

Suggested BibTeX entry:

@article{Honkela96alma,
    author = {Timo Honkela and Samuel Kaski and Krista Lagus and Teuvo Kohonen},
    journal = {ALMA},
    note = {Electronic Journal, address http://www.diemme.it/~luigi/alma.html},
    number = {2},
    title = {Self-organizing maps of document collections},
    volume = {1},
    year = {1996},
}