Abbasov, I., and J. Huseynov. “Charge-Transfer Processes in (SnS)1−x(PrS)x Alloys”. Ukrainian Journal of Physics 62, no. 10 (December 12, 2018): 883. Accessed July 3, 2020. https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2018622.