Pangaribuan, Timbang, Nasruddin MN, Eddy Marlianto, and Mula Sigiro. 2018. “The Controller Design Using Local Stability Analysis on a Nonlinear Inverted Pendulum”. International Journal of Engineering & Technology 7 (2): 823-27. https://doi.org/10.14419/ijet.v7i2.13217.