M. Mohammad, H., هدى, Y. Jamil, N., نوفل, I. Abdullah, A., & عبد. (2025). Photonic Bandgap Tuning of Photonic Crystals by Air Filling Fraction. Rafidain Journal of Science, 24(9), 96–102. https://doi.org/10.33899/rjs.2013.78796