ANAGNOSTOPOULOS, ET AL., D. F. Mass determination of the charged pion, using high precision X-ray spectroscopy. HNPS Advances in Nuclear Physics, [S. l.], v. 9, p. 308–314, 2020. DOI: 10.12681/hnps.2791. Disponível em: https://eproceedings.epublishing.ekt.gr/index.php/hnps/article/view/2791. Acesso em: 5 may. 2024.