Woldemariam, Menberu Mengesha, and Tolu Biressa Habte. “Electronic and Structural Study of Hexagonal Wurtizite Zinc Oxide Using Ab-Initio Technique”. The International Journal of Science & Technoledge 4, no. 11 (November 30, 2016). Accessed July 17, 2024. http://internationaljournalcorner.com/index.php/theijst/article/view/124048.