1. IEEE Standard 1159: ‘Recommended practice for monitoring electric power quality’ (IEEE, New York, 1995) (Numerical example: http://grouper.ieee.org/groups/1159/2/wave7.xls, accessed July 2005)
2. IEEE Standard 1100: ‘IEEE Recommended Practice for Powering and Grounding Sensitive Electronic Equipment (Emerald Book)’ (IEEE, New York, 1992, 1999, and revision draft 2001)
3. IEC Standard 61000-2-8: ‘Electromagnetic compatibility (EMC), Part 2: Environment, Section 8: Voltage dips and short interruptions on public electric power supply systems with statistical measurement’ (International Electrotechnical Commission, Geneva, 2000)
4. IEC Standard 61000-4-30: ‘Electromagnetic compatibility (EMC), Part 4: Testing and measurement techniques, Section 30: Power quality measurement techniques’ (International Electrotechnical Commission, Geneva, 2003)
5. Bollen, M.: ‘Understanding power quality problems: Voltage sags and interruptions’, (IEEE Press series on Power Eng., New York 2000),Numerical example: ftp://ftp.ieee.org/uploads/press/Bollen/Data/sag1.mat, accessed July 2005)