Youssef, Ayda Aly, Ayman Nada, and Hassan Ali Elkiki. “Ethmoidal Sinus Osteoma Associated With Pneumocephalus”. Global Journal of Medical and Clinical Case Reports 10, no. 3 (July 3, 2023): 016–018. Accessed January 6, 2025. https://www.organscigroup.com/gjmccr/article/view/GJMCCR-10-271.