Abdel Radi Abdel Rahman Abdel Gadir Abdel Rahman, Sulima Ahmed Mohammed Zubir. “The Applications of Cotangent Bundle in Dynamics”. Mathematical Statistician and Engineering Applications 72, no. 1 (January 21, 2023): 141–162. Accessed May 4, 2024. https://www.philstat.org/index.php/MSEA/article/view/1789.