@inproceedings{
    moen1,
    author = "Mannila, Heikki and Moen, P.",
    pages = "271-280",
    booktitle = "Data Warehousing and Knowledge Discovery (DaWaK)",
    year = "1999",
    editors = "M.K. Mohania and A. M. Tjoa",
    title = "Similarity between event types in sequences"
}