Saad S. Al-Dujaily. “Effects of Adding Human Follicular Fluid and Pentoxifylline on IUI Outcome of Asthenozoospermic Patients”. Global Journal of Medical Research, vol. 14, no. E4, July 2014, pp. 13-17, https://medicalresearchjournal.org/index.php/GJMR/article/view/627.