A. Huang, E. Olson, and D. Moore. Proceedings of the IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), Taipei, page 4057-4062. (October 2010)
S. Hosain, and H. Jamil. Social Semantic Web: Where Web 2.0 Meets Web 3.0, Papers from the 2009 AAAI Spring Symposium, SS-09-08, page 53--58. Menlo Park, CA, AAAI Press, (2009)
M. Horchani, L. Nigay, and F. Panaget. Proceedings of IUI '07: 12th International Conference on Intelligent User Interfaces, Honolulu, HI, USA, page 206-215. (2007)
M. Horchani, B. Caron, L. Nigay, and F. Panaget. Proceedings of the 9th International Conference on Multimodal Interfaces (ICMI '07), Nagoya, Japan, page 291-298. (2007)
H. Holzapfel, K. Nickel, and R. Stiefelhagen. Proceedings of the 6th International Conference on Multimodal Interfaces (ICMI '04), State College, PA, USA, page 175-182. (2004)
L. Hong, E. Chi, R. Budiu, P. Pirolli, and L. Nelson. Proceedings of the Working Conference on Advanced Visual Interfaces (AVI '08), Napoli, Italy, page 65-72. (2008)