1. M.A. Ibrahim: Protection and Control for Power System (CreateSpace Independent Publishing Platform, North Charleston 2016)
2. IEC: IEC International Electrotechnical Vocabulary (IEV) Part Power System Protection; IEC 60050, Part 448 (IEC, Geneva 2017)
3. P.M. Anderson: Power System Protection (McGraw-Hill, New York 1998)
4. GEC ALSTHOM: Protective Relays—Application Guide (GEC ALSTHOM Measurements Limited, Stafford 1987)
5. IEC: IEC 60909-0 Short Circuit Current in Three-phase a.c. Systems; Part 0: Calculation of Currents (IEC, Geneva 2016)