Anagnostopoulos, et al. DF. Mass determination of the charged pion, using high precision X-ray spectroscopy. HNPS Adv Nucl Phys [Internet]. 2020 Feb. 11 [cited 2024 Jul. 22];9:308-14. Available from: https://eproceedings.epublishing.ekt.gr/index.php/hnps/article/view/2791