Mohammed Salih Hussien, M., ممتاز, Th. T. Yahya, I. and اسماعیل 2021. Calculation of The Electronic Energy Band Structure of GaAs Crystal Using The Semiempirical Tight Binding Method. Journal of Education and Science (JES). 30, 4 (Sep. 2021), 1–14. DOI:https://doi.org/10.33899/edusj.2021.129475.1140.