1. Walker, M.A., et al.: DARPA Communicator: Cross-system results for the 2001 evaluation. In: International Conference on Spoken Language Processing, Denver, USA, vol. 1, pp. 269–272 (2002)
2. http://www.w3.org/TR/voicexml20/
3. http://www.saltforum.org
4. Maes, S.H.: A VoiceXML framework for reusable dialog components. In: Symposium on Applications and the Internet, SAINT 2002, pp. 28–30 (2002)
5. http://www.nuance.com/prodserv/proddevtools.html