M Hamed, M., H. T Jarjees, and K. M Awni. “ Tipping and Extrusion During Canine Retraction by Sliding Mechanics Using Different Arch Wires”. Al-Rafidain Dental Journal, vol. 7, no. 3, Dec. 2007, pp. 93-102, doi:10.33899/rdenj.2007.164417.