Abdulsalam, Hassan, and Tahir Abdullahi. “The Study of Lead-Free CH3NH3GeX3 (X=F, Cl, Br, I and At) for Optoelectronic Applications Using First-Principle”. Nigerian Journal of Physics 33, no. 2 (June 30, 2024): 30–40. Accessed September 19, 2024. https://njp.nipngr.org/index.php/njp/article/view/215.