TY  JOUR
TI  Invention of an electronic tube audio frequency amplifier
KW  audion
KW  RF amplifier
KW  John S. Stone
KW  Otto von Bronk
KW  Fritz Lowenstein
KW  audio amplifier
KW  Lee de Forest
KW  cascade
KW  cascade audio amplifiers
JO  Infocommunications and Radio Technologies
AU  Pestrikov, V..
PY  2020
IS  3
PB  Federal State Educational Institution of Higher Education Sevastopol State University