N. Sithole, K. Kgatwane, and P. Ngoepe, “ Enhancing the Structural and Mechanical Properties of Li1.22-XNaxMn0.78o2 (0.00 ≤ X ≤ 0.05) by Doping with Sodium: DFT and FHI-Aims”, S AFR J IND ENG, vol. 36, no. 3, pp. 351–359, Dec. 2025.