Khan, T., H. Khan, S. Mohsin, M. Q. Saeed, and F. Ahmad. “MANUFACTURER TOLERANCE IN SLOT HEIGHT OF 0.022-INCH MAXILLARY CANINE BRACKETS”. Pakistan Oral & Dental Journal, Vol. 38, no. 2, Sept. 2018, pp. 200-3, https://podj.com.pk/index.php/podj/article/view/199.