Mohammed Younis, Y. and Abdul Ghani A. Abdul Ghafoor, D. 2007. Setting Of Distance Protection For Ehv Doubled Circuit Line By Using Quadrilateral Relay. Al-Rafidain Engineering Journal (AREJ). 15, 3 (Sep. 2007), 32–44. DOI:https://doi.org/10.33899/rengj.2007.45073.