00557naa#a2200181#i#450# EN\\bibl\52927 20250108084645.3 2587-9936 20210325b2021####ek#y0engy0150####ca RUS RU The genesis of Lee de Forest audion Journal article Sevastopol Federal State Educational Institution of Higher Education Sevastopol State University 2021 37 с. Journal article local . 621.37-621.39(091) RUS Pestrikov Viktor M rusjbpc.ru