@inproceedings{1042042,
    title = "Application of directional statistics to gradient-based lip contour extraction for speechreading",
    author = "Gordan, Michaela and Kotropoulos, Constantine and Πήτας, Ιωάννης",
    year = "2001",
    pages = "223-242",
    publisher = "Εκδοτικός Οργανισμός Λιβάνη",
    booktitle = "8th Panhellenic Conference in Informatics Proceedings (Volume 2)"
}