Yangyozov, Anastas, Zhivko Zhekov, Krastin Jordanov, Daniela Chakyrova, and Nadezhda Doseva. ANNUAL JOURNAL OF TECHNICAL UNIVERSITY OF VARNA, BULGARIA 8, no. 2 (December 31, 2024): 33-42. Accessed March 23, 2025. https://aj-tuv.org/index.php/ajtuv/article/view/322.