1. Electricity Metering Equipment (A.C.)-General Requirements, Tests and Test Conditions—Part 11: Metering Equipment, EN 62052-11, Nov. 2003.
2. Electricity Metering Equipment (A.C.)-Particular Requirements-Part 21: Static Meters for Active Energy (Class 1 and 2), EN 62053-21, Mar. 2003.
3. Electricity Metering Equipment (A.C.)-Particular Requirements-Part 21: Static Meters for Active Energy (Class 0, 2S and 0, 5S), EN 62053-22, Mar. 2003.
4. Evaluation of reactive power meters in the presence of high harmonic distortion;Filipski;IEEE Trans. Power Del.,1992
5. Powers in nonsinusoidal situation: a review of definitions and physical meaning;Emanuel;IEEE Trans. Power Del.,1990