Reference:

Timo Honkela and Tuomas Sandholm. Machine learning (in finnish). In Encyclopedia on Artificial Intelligence (in Finnish), pages 244–255. Gaudeamus, 1993.

Suggested BibTeX entry:

@incollection{Honkela1993ml,
    author = {Timo Honkela and Tuomas Sandholm},
    booktitle = {Encyclopedia on Artificial Intelligence (in Finnish)},
    pages = {244-255},
    publisher = {Gaudeamus},
    title = {Machine Learning (in Finnish)},
    year = {1993},
}