YAO, Kexin. The Unification of Gravitational Field and Electromagnetic Field. European Journal of Applied Sciences, [S. l.], v. 9, n. 5, p. 272–288, 2021. DOI: 10.14738/aivp.95.10969. Disponível em: https://scholarpublishing.org/journals/index.php/EJAS/article/view/8017. Acesso em: 30 may. 2026.