Radwan, Q., and D. S. Allos. “Malignant Tumours of Nasal Cavity and Paranasal Sinuses in North of Lraq a Fifteen Years Retrospective Study”. Annals of the College of Medicine, Mosul, vol. 31, no. 1, June 2005, pp. 17-21, doi:10.33899/mmed.2005.29450.