A.AL-OBAYDI, M.; مؤيد. The Composing of A Gravitational Electromagnetic Tensor and Study it’s Properties. Rafidain Journal of Science, [S. l.], v. 17, n. 2, p. 95–102, 2025. DOI: 10.33899/rjs.2006.43337. Disponível em: https://ojs.uomosul.edu.iq/index.php/rsci/article/view/12259. Acesso em: 16 aug. 2025.