Freik, D. M., B. P. Volochanska, and T. O. Parashchuk. “Thermodynamic Parameters of PbTe Crystals: DFT-Calculations”. Physics and Chemistry of Solid State 16, no. 1 (March 15, 2015): 28–33. Accessed May 6, 2024. https://scijournals.pnu.edu.ua/index.php/pcss/article/view/1705.