Zubair Durrani, Syed Ghazanfar Hassan, and Shomaila Ameer Alam, “A Study of Classification Systems for Maxillectomy Defects”, JPPA, vol. 1, no. 2, pp. 117–124, Dec. 2013, Accessed: Aug. 08, 2026. [Online]. Available: https://jppa.pk/jppa/article/view/23