Hemant Kumar Mishra, and Govind Kumar Jha. “Frequency Analysis of Halo Orbits in the Sun-Mercury System”. Malaya Journal of Matematik 8, no. 02 (April 1, 2020): 433–444. Accessed July 16, 2024. https://www.malayajournal.org/index.php/mjm/article/view/1421.