Dimova, Desislava, et al. “OPTIMIZATION OF A TECHNOLOGICAL PROCESS FOR HEAT TREATMENT OF CU99.9 WITH DIFFERENT DEGREES OF PLASTIC DEFORMATION”. ENVIRONMENT. TECHNOLOGY. RESOURCES. Proceedings of the International Scientific and Practical Conference, vol. 3, June 2024, pp. 43-47, https://doi.org/10.17770/etr2024vol3.8138.