Reference:

Timo Honkela. Self-Organizing Maps in Natural Language Processing. PhD thesis, Helsinki University of Technology, Espoo, Finland, 1997.

Suggested BibTeX entry:

@phdthesis{Honkela97thesis,
    address = {Espoo, Finland},
    author = {Timo Honkela},
    school = {Helsinki University of Technology},
    title = {Self-Organizing Maps in Natural Language Processing},
    year = {1997},
}