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- [24] Microphonic improvement in vacuum tubes PROCEEDINGS OF THE INSTITUTE OF RADIO ENGINEERS, 1929, 17 : 1621 - 1632
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- [26] VACUUM SEALING TECHNIQUE FOR PHOTOMULTIPLIER TUBES REVIEW OF SCIENTIFIC INSTRUMENTS, 1965, 36 (12): : 1887 - &
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- [30] TRANSISTOR-CUM-VACUUM TUBES JOURNAL OF SCIENTIFIC & INDUSTRIAL RESEARCH, 1963, 22 (12): : 521 - &