R. H. Risan, “Resonance Tunneling Through GaN/AlGaN Superlattice System”, IJP, vol. 7, no. 8, pp. 63–68, Dec. 2009, Accessed: Nov. 01, 2024. [Online]. Available: https://ijp.uobaghdad.edu.iq/index.php/physics/article/view/917