Taimoor, Muhammad, Sohail Iqbal, Umar Iqbal Bhatti, and Abid Ali Khan. 2015. “Autonomous Flight of Unmanned Aerial Vehicle (UAV) by Using Linear Quadratic Regulator (LQR) ”. International Journal of Control and Automation 8 (1), 09 - 28. http://sersc.org/journals/index.php/IJCA/article/view/130.