Reference author: Saul Greenberg

Tse, E. ., Hancock, M. ., & Greenberg, S. . (2007). Speech-filtered bubble ray: Improving target acquisition on display walls. Proceedings of the 9th International Conference on Multimodal Interfaces, 307\textendash314. New York, NY, USA: ACM. https://doi.org/10.1145/1322192.1322245

Hancock, M. S., Miller, J. D., Greenberg, S. ., & Carpendale, S. . (2006). Exploring visual feedback of change conflict in a distributed 3D environment. Proceedings of the Working Conference on Advanced Visual Interfaces, 209\textendash216. New York, NY, USA: ACM Press. https://doi.org/10.1145/1133265.1133307