@incollection{
    Lagus99icann,
    author = "Lagus, Krista and Kaski, Samuel",
    publisher = "IEE, London",
    title = "Keyword selection method for characterizing text document maps",
    booktitle = "Proceedings of ICANN99, Ninth International Conference on Artificial Neural Networks",
    volume = "1",
    year = "1999",
    pages = "371--376"
}