1. Effects of Current on Human Beings and Livestock — Part 1: General Aspects, IEC TS 60479-1:2005, 2005.
2. Use of Conventional Touch Voltage Limits — Application Guide, IEC TS 61201:2007, 2007.
3. Earthing of Power Installations Exceeding 1kV a.c., CENELEC EN 50522:2010, 2010.
4. Power Installations Exceeding 1kV a.c. — Part 1: Common Rules, IEC 61936-1:2010, 2010.
5. IEEE Guide for Safety in AC Substation Grounding, IEEE Std 80-2013, 2013.