In: Ronald A. Cole; Joseph Mariani; Hans Uszkoreit; Annie Zaenen; Victor Zue (Hrsg.). Survey of the State of the Art in Human Language Technology. Pages 147-151, ISBN 0-521-52977-1, Cambridge University Press, Cambridge, 1997.
In: Proceedings of the 5th Biennial European Conference on Speech Communication and Technology (Eurospeech'97), September 22-25. European Conference on Speech Communication and Technology (EUROSPEECH), Rhodes, Greece, Pages 1479-1482, 1997.