MANAF G. SAID, D.; ABDULGHAFOOR I. ABDULLAH, D.; MAAN M.SHAKER, D. Mathematical Modeling For Multi-Layer Optical Fibers. Al-Rafidain Engineering Journal (AREJ), [S. l.], v. 15, n. 3, p. 73–82, 2007. DOI: 10.33899/rengj.2007.45056. Disponível em: https://jamh.uomosul.edu.iq/index.php/arej/article/view/30784. Acesso em: 8 sep. 2025.