Denev, D. ., & Tsankov, T. (2023). ANALYSIS OF THE REQUIREMENTS FOR OPTICAL CABLES FOR CONSTRUCTION OF UNDERWATER TRANSMISSION SYSTEMS: ANALYSIS OF THE REQUIREMENTS FOR OPTICAL CABLES FOR CONSTRUCTION OF UNDERWATER TRANSMISSION SYSTEMS. JOURNAL SCIENTIFIC AND APPLIED RESEARCH, 21(1), 75–79. https://doi.org/10.46687/jsar.v21i1.323