1. Comparison of Deviations from Square Law for RF Crystal Diodes and Barretters;Sorger;IRE Transactions on Instrumentation,1959
2. Measurement of Microwave Parameters by the Ratio Method;Weinschel;Microwave Journal,1969
3. Linear Detection of Heterodyne Signals;Terman;Electronics,1930
4. The Design and Testing of Multi-Range Receivers;Harnett,1935
5. A Method of Calibrating Standard Signal Generators and Radio Frequency Attenuators;Gainsborough;Journal of the IEE,1947