Rimrott, F. P. J., and W. M. Szcygielski. “Analogies Between the Chaplygin Problem and the Kepler Problem”. Technische Mechanik - European Journal of Engineering Mechanics 15, no. 4 (October 20, 2019): 315–324. Accessed May 15, 2024. https://journals.ub.ovgu.de/index.php/techmech/article/view/1278.