Mohammed, Nibras J, and Mushriq F Al-Janabi. “Force Decay of Orthodontic Elastomeric Chains by Using Three Different Mechanisms Simulating Canine Retraction”. Journal of Baghdad College of Dentistry, vol. 25, no. 1, Mar. 2013, pp. 159-63, https://jbcd.uobaghdad.edu.iq/index.php/jbcd/article/view/155.