@inproceedings{
    amn,
    author = "Ahonen, H. and Mannila, Heikki and Nikunen, E.",
    pages = "153-167",
    booktitle = "Proceedings of the Second International Colloquium on Grammatical Inference and Applications",
    year = "1994",
    editors = "R.S. Carrasco and J. Oncina",
    title = "Forming grammars for structured documents: an application of grammatical inteference"
}