1. Network Protection & Automation Guide,2002
2. C37.113, “IEEE Guide for Protective Relay Applications to Transmission Lines,1999
3. J. Andrichak, G. Alexander, “Distance relays fundamentals”, GE Power Manag., Pub. GER-3966.
4. S. Wilkinson, C. Mathews, “Dynamic characteristics of mho distance relays”, GE Power Manag., Pub. GER-3742.
5. Protective Relaying Theory and Applications;E.lmore,2004