00561naa#a2200181#i#450# EN\\bibl\52915 20250119052404.7 2587-9936 20200925b2020####ek#y0engy0150####ca RUS RU Discovery of the origin of cathode rays Journal article Sevastopol Federal State Educational Institution of Higher Education Sevastopol State University 2020 34 с. Journal article local . 621.37-621.39(091) RUS Pestrikov Viktor M rusjbpc.ru