1. ΙΕΕΕ guide for safety in AC substation grounding;ANSI/IEEE Std 80-2000,2000
2. IEEE application guide for AC high – voltage circuit breakers rated on a symmetrical current basis;ANSI/IEEE Std. C 37.010,1999
3. Short-circuit currents in three-phase ac systems;International Standard IEC 60909,2001
4. Short-circuit calculations in networks with distributed generation;Boutsika,2008
5. Short circuit in power systems – a practical guide to IEC 60909;Kasikci,2002