Khalid Khaleel Mohammad, D., د., M. Saad Gazai, and سعد. “Design and Fabrication of Thin Film a-Si/Al2O3 Infrared Filter”. Al-Rafidain Engineering Journal (AREJ), vol. 20, no. 4, Aug. 2012, pp. 60-68, doi:10.33899/rengj.2012.54156.