Choudhry, R. K. (1974) “On Periodic Orbits in the Restricted Problem of Three Bodies in a Three Dimensional Coordinate System”, The Journal of the Indian Mathematical Society, 38(1-4), pp. 319–328. Available at: https://www.informaticsjournals.com/index.php/jims/article/view/16706 (Accessed: 27 April 2024).