Shumilov, Y. N. “ASPECTS OF SURGE ARRESTERS’ MAXIMUM OPERATING VOLTAGE CHOICE FOR ELECTRICAL EQUIPMENT INSULATION PROTECTION IN 6 … 35 KV MAINS”. Electrical Engineering & Electromechanics, no. 4, Sept. 2013, pp. 69-71, doi:10.20998/2074-272X.2013.4.14.