Petrov, G., Stancheva, A. and Kadrev, V. (2014) “Specialized databases for spectrum managament research, analysis and forecasting of the effects of working electromagnetic fields”, Yearbook Telecommunications, 1, pp. 87–96. Available at: https://ojs.nbu.bg/index.php/YT/article/view/189 (Accessed: 17 May 2024).