1. Nguyen, H.G., Pezeshkian, N., Gupta, A., Farrington, N.: Maintaining communication link for a robot operating in a hazardous environment. ANS 10th Int. Conf. on Robotics and Remote Systems for Hazardous Environments, Gainesville, FL, March 28–31 (2004)
2. de Freitas, E.P., et al.: “UAV Relay Network to Support WSN Connectivity” Ultra Modern Telecommunications and Control Systems and Workshops (ICUMT), 2010 International Congress on, Oct.,18–20 (2010)
3. Pinkney, F., Hampel, D., DiPierro, S., Abbe, B.S., Sheha, M.: UAV communications payload development. In: MILCOM 97 Proceedings, pp. 403–407, 2–5 Nov 1997
4. Northrop Grumman Web Site, “UAV communications relay” www.es.northropgrumman.com/solutions/uavcommrelay/ . Accessed 13 Feb 2011
5. Burdakov, O., Doherty, P., Holmberg, K., Kvarnstrom, J., Olsson, P.-M.: Positioning unmanned aerial vehicles as communication relays for surveillance tasks. In: Robotics: Science and Systems 5th Conference, June 28 - July 1, (2009)