1. High Voltage Measurement Techniques;Schwab,1972
2. Introduction to Instrument Transformers;Jenkins,1967
3. 1994 Proc. Int. Symp. on H.V. Engineering,1995
4. Electrical Machines;Draper,1976
5. Recommendations for Voltage Measurements by Means of Sphere-gaps (one sphere earthed);IEC Publication 52,1960