TY  - GEN
AU  - Howson,D.P.
AU  - Smith,Roy Barrington
TI  - Parametric amplifiers
T2  - European electrical and electronic engineering series
SN  - 007094122X
U1  - 621.381535,HOW 
PY  - 1970///
CY  - London, New York
PB  - McGraw-Hill
KW  - Telecommunications engineering
N1  - Amplification and Frequency Changing (Page-1),  Noise and the Varactor (Page-23), Three-Frequency Amplifiers and Converters (Page-66), Three Frequency Amplifiers (Page-85), Four Frequency Amplifiers and Converters (Page-111), Up-Converters, Down Converters and Two Diode Amplifiers (Page-137)
ER  -