One-Loop Helicity Amplitude For Light-By-Light Scattering. Journal of Pharmaceutical Negative Results, [S. l.], p. 984–986, 2023. DOI: 10.47750/pnr.2023.14.S02.118. Disponível em: https://pnrjournal.com/index.php/home/article/view/6881.. Acesso em: 7 jun. 2026.