Georgiev, Kliment. “STATISTICAL ANALYSIS OF THE QUALITY OF A TECHNOLOGICAL PROCESS FOR THE PRODUCTION OF SHAFTS FOR ELECTRIC MOTORS BY ROUGHNESS STUDY”. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference, vol. 3, June 2024, pp. 70-74, https://doi.org/10.17770/etr2024vol3.8137.