1. A synthetic visual environment with hand gesture and voice input;Weimer,1989
2. Two-handed gesture in multi-modal natural dialog;Bolt,1992
3. Multi-modal natural dialogue;Torisson,1992
4. A virtual environment for interactive assembly planning and evaluation;Kuehne,1995
5. Proceedings of the ACM SIGCHI Conferences: CHI94 Human Factors in Computing Systems;Chapin,1994