M. MOHAMMAD, H.; هدى; Y. JAMIL, N.; نوفل; I. ABDULLAH, A.; عبد. Dispersion Properties of Up-doping Photonic Crystal Fibers. Rafidain Journal of Science, [S. l.], v. 25, n. 1, p. 101–107, 2025. DOI: 10.33899/rjs.2014.86089. Disponível em: https://ojs.uomosul.edu.iq/index.php/rsci/article/view/12286. Acesso em: 14 aug. 2025.