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- [22] POSSIBILITY OF CASCADED FREQUENCY DOUBLERS WITHOUT INTERSTAGE TUNNEL-DIODE AMPLIFIERS RADIO ENGINEERING AND ELECTRONIC PHYSICS-USSR, 1966, 11 (07): : 1177 - &
- [23] TUNNEL-DIODE MIXERS PROCEEDINGS OF THE INSTITUTION OF ELECTRICAL ENGINEERS-LONDON, 1965, 112 (07): : 1311 - &