1. R. Mahony V. Kumar and P. Corke Multirotor Aerial Vehicles-Modeling Estimation and Control of Quadrotor IEEE Robotics and Automation Magazine 2012.

2. S. H. Lee S. H. Kang and Y. Kim Trajectory Tracking Control of Quadrotor UAV 11th International Conference on Control Automation Systems Gyeonggi-do Korea 2011.

3. S. Bouabdallah and R. Siegwart Backstepping and Sliding-mode Techniques Applied to an Indoor Micro Quadrotor Proceedings of the 2005 IEEE International Conference on Robotics and Automation Barcelona Spain April 2005.

4. G. M. hoffmann S. L. Waslander and C. J. Tomlin Quadrotor Helicopter Trajectory Tracking Control Proceedings of the AIAA Guidance Navigation and Control Conference Honolulu Hawaii 2008.

5. D. Lee T. C. Burg B. Xian and D. M. Dawson Output Feedback Tracking Control of an Underactuated Quadrotor UAV Proceedings of the American Control Conference New York NY 2007.

6. P. Castillo R. Lozano and A. Dzul Stabilization of a Mini Rotorcraft with Four Rotors IEEE Control System Magazine 2005.

7. R. Cunha D. Cabecinhas C. Silvestre Nonlinear Trajectory Tracking Control of a Quadrotor Vehicle Proceedings of the American Control Conference New York NY 2009.

8. F. Tyan and D. S. Bernstein Global Stabilization of Systems Containing a Double Integrator Using a Saturated Linear Controller International Journal of Robust and Nonlinear Control 9 1999 1143-1156.

9. M. Shuster A Survey of Attitude Representations The Journal of the Astronautical Sciences 41(4) 1993 439-517.