Khudhair, Nadheer Hashim, et al. “Towards a Better Dacryocystorhinostomy, Evaluation of Multimodal Surgical Techniques in Nasolacrimal Duct Obstruction”. AL-Kindy College Medical Journal, vol. 18, no. 2, Aug. 2022, pp. 101-6, https://jkmc.uobaghdad.edu.iq/index.php/MEDICAL/article/view/399.