References

1   Alan W. Biermann , Curry I. Guinn , Michael S. Fulkerson , Greg A. Keim , Zheng Liang , Douglas M. Melamed , Krishnan Rajagopalan, Goal-Oriented Multimedia Dialogue with Variable Initiative, Proceedings of the 10th International Symposium on Foundations of Intelligent Systems, p.1-16, October 15-18, 1997 

2   Nahum Gershon , Ward Page, What storytelling can do for information visualization, Communications of the ACM, v.44 n.8, p.31-37, Aug. 2001 

3   Michael Johnston , Philip R. Cohen , David McGee , Sharon L. Oviatt , James A. Pittman , Ira Smith, Unification-based multimodal integration, Proceedings of the eighth conference on European chapter of the Association for Computational Linguistics, p.281-288, July 07-12, 1997, Madrid, Spain 

4   Sharon Oviatt, Multimodal interfaces for dynamic interactive maps, Proceedings of the SIGCHI conference on Human factors in computing systems: common ground, p.95-102, April 13-18, 1996, Vancouver, British Columbia, Canada 

5   Ronnie W. Smith , Alan W. Biermann , D. Richard Hipp, An architecture for voice dialog systems based on prolog-style theorem proving, Computational Linguistics, v.21 n.3, p.281-320, September 1995 

6   Amanda Stent , John Dowding , Jean Mark Gawron , Elizabeth Owen Bratt , Robert Moore, The CommandTalk spoken dialogue system, Proceedings of the 37th annual meeting of the Association for Computational Linguistics on Computational Linguistics, p.183-190, June 20-26, 1999, College Park, Maryland 
