albyatei, ameer, and Issa Zainalabddeen assaflly. “Theoretical Study of Hydrogen Adsorption on Graphene Nanostructures Functionalized With Nickel for Solid State Hydrogen Storage”. Journal of Education and Science 30, no. 2 (June 1, 2021): 19–32. Accessed September 10, 2025. https://edusj.uomosul.edu.iq/index.php/edusj/article/view/42635.