1. Redden, E., Elliott, L.: Robotic control systems for dismounted soldiers. In: Jentsch, F.G., Barnes, M.J. (eds.) Human-Robot Interactions in Future Military Operations, pp. 335–352. Ashgate, Farnham (2010)
2. Tellex, S., Kollar, T., Dickerson, S., Walter, M.R., Banerjee, A.G., Teller, S., Roy, N.: Understanding natural language commands for robotic navigation and mobile manipulation. In: Proceedings of the National Conference on Artificial Intelligence (AAAI 2011) (2011)
3. U.S. Army: Visual signals. U.S. Army, Washington, D.C. (1987)
4. Oviatt, S.: Breaking the robustness barrier: recent progress on the design of robust multimodal systems. Adv. Comput. 56, 305–341 (2002)
5. Haas, E.C.: Integrating auditory warnings with tactile cues in multimodal displays for challenging environments. In: 13th International Conference on Auditory Displays, Montreal (2007)