Reference:

Krista Lagus. Text retrieval using self-organized document maps. Neural Processing Letters., 15(1):21–29, 2002.

Suggested BibTeX entry:

@article{Lagus02.npl,
    author = {Krista Lagus},
    journal = {Neural Processing Letters.},
    number = {1},
    pages = {21--29},
    title = {Text retrieval using self-organized document maps},
    volume = {15},
    year = {2002},
}