Acton, J.R.
Cold cathode discharge tubes / J.R. Acton, J.D. Swift
Academic Press, 1963
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Horst, H. L. van der.
Gas-discharge tubes / H. L. van der Horst.
Centrex Pub. Co, 1964
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Pozar, David M.
Microwave engineering
Jones Wiley & Sons, Inc., 2012
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Gentili, Christian
Microwave amplifiers and oscillators
McGraw-Hill, 1987.
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Helszajn, Joseph
Passive and active microwave circuits
John Wiley & Sons, 1978
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