PUCCINI, Antonio. Photon Not Massless: A Possible New Theorem. European Journal of Applied Sciences, [S. l.], v. 12, n. 06, p. 753–800, 2024. DOI: 10.14738/aivp.1206.18074. Disponível em: https://scholarpublishing.org/journals/index.php/EJAS/article/view/10528. Acesso em: 30 may. 2026.