1. 2http://www.suasnews.com/2010/12/3216/world-renowned-uav-control-expert-presents-gseas-distinguished-guest-lecture/.
2. A Standards-Based Approach to Sense-and-Avoid Technology
3. Geyer, C., Singh, S., and, Chamerlain, L. "Avoiding Collisions between Aircraft: State of the Art and Requirements for UAVs operating in Civilian Airspace", Tech. Report, CMU-RI-TR-08-03, Robotics Institute, Carnegie Mellon University, March, 2008.