Abdul Ghani A. Abdul Ghafoor, Dr., and Mr. Ahmed Ateya Al-Badrany. 2007. “Influence of Mutual Coupling Due to Zero-Sequence On The Performance of Distance Relay”. Al-Rafidain Engineering Journal (AREJ) 15 (1):1-15. https://doi.org/10.33899/rengj.2007.44935.