Sapkota, S. M., S. K. Singh, S. N. Thakur, B. Khanal, and B. R. Pandey. “Estimation of Vertical Distance of Incisive Papilla With Maxillary Central Incisor and Their Correlation in Various Arch Form”. Journal of Chitwan Medical College, vol. 11, no. 1, Mar. 2021, pp. 34-36, https://www.nepjol.info/index.php/JCMC/article/view/36014.