Dr. B. M. Saied, Prof., Dr. R. A. Khalil, and R.Kh. Antar. 2013. “Power Quality Improvement in a HVDC Transmission System Based on a Modified Active Power Filter-ENG”. Al-Rafidain Engineering Journal (AREJ) 21 (5):16-24. https://doi.org/10.33899/rengj.2013.79573.