Antonova, Mariela, and Stamen Antonov. “CHALLENGES FACING MODERN MECHANICAL ENGINEERING APPLICATIONS IN THE CONTEXT OF INDUSTRY 4.0: CHALLENGES FACING MODERN MECHANICAL ENGINEERING APPLICATIONS IN THE CONTEXT OF INDUSTRY 4.0”. JOURNAL SCIENTIFIC AND APPLIED RESEARCH 29, no. 1 (November 16, 2025): 134–138. Accessed December 6, 2025. https://jsar.ftn.shu.bg/index.php/jsar/article/view/463.