Beall, G. W., T. K. Kuanyshbekov, and Tulegenova М. А. “Graphene Produced by Carbon Diffusion through Nickel Foil”. Physical Sciences and Technology 5, no. 3-4 (January 5, 2019): 37–42. Accessed November 23, 2024. https://phst.kaznu.kz/index.php/journal/article/view/156.