FadlyNurullahRasedee, Ahmad, Mohammad Hasan Abdul Sathar, Hazizah Mohd Ijam, Khairil Iskandar Othman, Norizarina Ishak, Siti Raihana Hamzah, and Nur Amalina Jamaludin. “A Backward Difference Formulation for Solving Doffing-Van Der Pol Type Oscillators”. International Journal of Engineering & Technology 7, no. 4.19 (November 27, 2018): 36–39. Accessed April 27, 2024. https://www.sciencepubco.com/index.php/ijet/article/view/22009.