1. CIGRE. Working Group 37.28, Quality of supply - customer requirements, (June, 2001)
2. Federal law of RF of 27.12.2002 № 184-Фз “On technical regulation”
3. Federal law of RF of 26.03.2003 № 35-Фз “On electric power industry”
4. GOST 13109-97. Electric energy. Electromagnetic compatibility of technical equipment. Power quality limits in public power supply systems.