Filipova-Petrakieva, S. K., and Y. M. Shopov. “Electrical Device Protection from Overvoltage in a DC Power Supply Network: Fast-Acting Protection, Realized by an ‘Artificial’ Short Circuit in the Input of the Protected Device”. Engineering, Technology & Applied Science Research, vol. 10, no. 1, Feb. 2020, pp. 5314-9, doi:10.48084/etasr.3316.