Naga Anusha, M, Y Swara, S Koteswara Rao, and V Gopi Tilak. “Pendulum State Estimation Using Nonlinear State Estimators”. International Journal of Engineering and Technology 7, no. 2.7 (March 18, 2018): 9–11. Accessed April 15, 2025. https://sciencepubco.com/index.php/IJET/article/view/10244.