Ilchuk, H., M. Solovyov, I. Lopatynskyi, F. Honchar, and F. Tsyupko. “First Principles DFT Calculations of the Optical Properties of A4BX6 Group Crystals”. Physics and Chemistry of Solid State 22, no. 1 (March 12, 2021): 117–122. Accessed May 3, 2024. https://journals.pnu.edu.ua/index.php/pcss/article/view/4632.