Asmael, Huda, and Thair Abdul Lateef. “An Assessment of the Efficacy of Sinus Balloon Technique on Transcrestal Maxillary Sinus Floor Elevation Surgery”. Journal of Baghdad College of Dentistry 28, no. 1 (1): 109-113. Accessed November 19, 2019. http://jbcd.uobaghdad.edu.iq/index.php/jbcd/article/view/1092.