1. Data Acquisition Databook;Analog;Analog Devices, Norwood, Mass.,1984
2. Analog Signal Processing and Instrumentation;Arbel,1980
3. Units and standards of measurement;Bailey;J. Phys. E: Sci. Instrum.,1982
4. Hall effect devices in power measurement;Bishop;Electronic Engineering (GB),1973
5. BS 3938: 1973: Specification for Current Transformers;British Standards Institution,1973