Babu, Biji, et al. “Immunoexpression of p53 and Ki-67 Correlated With Clinicopathological Parameters in Predicting Recurrence of Oral Squamous Cell Carcinoma”. Asian Journal of Medical Sciences, vol. 11, no. 2, Feb. 2020, pp. 1-8, https://nepjol.info/index.php/AJMS/article/view/27022.