1. Guidelines for the evaluation of the dielectric strength of external insulation;cigre;Technical Brouchoure,1992
2. Human detection thresholds of DC, AC, and hybrid electric fields: a double-blind study
3. Guidelines for the evaluation of the dielectric strength of external insulation;CIGRE Brochure,1992
4. DC High-Voltage Sparkover Characteristics of Gaps and Insulator Strings
5. The Effect of HVAC-HVDC Line Separation in a Hybrid Corridor