1. Definition and Classification of Power System Stability IEEE/CIGRE Joint Task Force on Stability Terms and Definitions
2. Parks B.: ‘Transforming the grid to revolutionize electric power in North America’.Edison Electric Institute's Fall 2003 Transmission Distribution and Metering Conf. New Jersey USA 2003
3. Gavrilovic A.: ‘AC/DC system strength as indicated by short circuit ratios’.Int. Conf. on AC and DC Power Transmission London UK 1991 pp.27–32
4. AEMO: ‘Fact sheet: system strength’. Available at:https://www.aemo.com.au/‐/media/Files/Electricity/NEM/Security_and_Reliability/Reports/2016/AEMO‐Fact‐Sheet‐System‐Strength‐Final‐20.pdf
5. NERC: ‘Short‐circuit modeling and system strength’. White Paper February 2018