M. Mohammad, Huda, هدى, Nawfal Y. Jamil, نوفل, Abdulghafoor I. Abdullah, and عبد. 2025. “Dispersion Properties of Up-Doping Photonic Crystal Fibers”. Rafidain Journal of Science 25 (1):101-7. https://doi.org/10.33899/rjs.2014.86089.