I.Zynal, Hussein, and Bashar A.Fadeel. “Analysis and Design of Passive Filters to Reduce Line Current Harmonics for Controlled Rectifiers”. Al-Rafidain Engineering Journal (AREJ) 22, no. 1 (February 28, 2014): 80–96. Accessed September 7, 2025. https://jamh.uomosul.edu.iq/index.php/arej/article/view/31165.