Dobrev, Stefan. “GNSS TECHNOLOGY FOR RESEARCH OF DEFORMATIONS OF HYDROTECHNICAL INSTALLATIONS: GNSS TECHNOLOGY FOR RESEARCH OF DEFORMATIONS OF HYDROTECHNICAL INSTALLATIONS”. JOURNAL SCIENTIFIC AND APPLIED RESEARCH 27, no. 1 (November 13, 2024): 30–36. Accessed April 10, 2025. https://jsar.ftn.shu.bg/index.php/jsar/article/view/403.