00573naa#a2200181#i#450# EN\\bibl\52922 20240728182401.7 2587-9936 20201225b2020####ek#y0engy0150####ca RUS RU Lee de Forest’s early work on wireless telegraphy Journal article Sevastopol Federal State Educational Institution of Higher Education Sevastopol State University 2020 51 с. Journal article local . 621.37-621.39(091) RUS Pestrikov Viktor M rusjbpc.ru