P. T. Bhattacharya, S. Pal, R. Sinha, M. Misra, and A. Bhattacharya, “An Upper Lip Swelling: A Case Report, Differential Diagnosis and Review of Literature”, J Orofac Res, vol. 3, no. 2, pp. 136–139, Jan. 1970, Accessed: Dec. 05, 2025. [Online]. Available: https://mansapublishers.com/jofr/article/view/1909