HADI, M.; MULIYONO, S. GEOMETRICAL OPTICS AS AN ABELIAN U(1) GAUGE THEORY IN A VACUUM SPACE-TIME. Indonesian Physical Review, [S. l.], v. 7, n. 1, p. 143–151, 2024. DOI: 10.29303/ipr.v7i1.278. Disponível em: https://ipr.unram.ac.id/index.php/ipr/article/view/278. Acesso em: 21 nov. 2024.