Reference:

Samuel Kaski. Data exploration using self-organizing maps. Acta Polytechnica Scandinavica, Mathematics, Computing and Management in Engineering Series No. 82, March 1997. D.Sc.(Tech) Thesis, Helsinki University of Technology, Finland.

Suggested BibTeX entry:

@article{Kaski97thesis,
    author = {Samuel Kaski},
    journal = {Acta Polytechnica Scandinavica, Mathematics, Computing and Management in Engineering Series No.~82},
    month = {March},
    note = {D.Sc.(Tech) Thesis, Helsinki University of Technology, Finland},
    title = {Data Exploration Using Self-Organizing Maps},
    year = {1997},
}