1. Mueller Eric, R.: Hardware-in-the-loop Simulation Design for Evaluation of Unmanned Aerial Vehicle Control Systems. NASA Ames Research Center, Moffett Field, CA, 94035
2. Gessing, R.: About Optimality of Discrete-Time LQ Observer Based Regulator, Silesian University of Technical, Institute of Automation
3. Johnson, E.N., Mishra, S.: Flight simulation for the development of an experimental UAV. School of Aerospace Engineering, Georgia Institute of Technology, Atlanta, GA, 30332-015
4. Jung, D., Tsiotras, P.: Modeling and Hardware-in-the-Loop Simulation for a Small Unmanned Aerial Vehicle, Georgia Institute of Technology, Atlanta, GA, 30332-0150
5. Sorton, E.F., Hammaker, S.: Simulated Flight Testing of an Autonomous Unmanned Aerial Vehicle Using Flight-Gear, Infotech@Aerospace, Arlington, VA, AIAA 2005-7083 (September 2005)