Buttery, H. W., C. J. Middleton, C. D.Y. Moore, and R. H. Peck. “P3_8 Elysium: How Fast Did the Atmosphere Escape?”. Physics Special Topics 15, no. 1 (December 6, 2016). Accessed May 19, 2025. https://journals.le.ac.uk/index.php/pst/article/view/912.