dhewa, oktaf agni, Andi Dharmawan, and Tri Kuntoro Priyambodo. 2017. “Model of Linear Quadratic Regulator (LQR) Control Method in Hovering State of Quadrotor”. Journal of Telecommunication, Electronic and Computer Engineering (JTEC) 9 (3):135-43. https://jtec.utem.edu.my/jtec/article/view/1589.