Adhikari, B., B. Khanal, and C. Arora. “Orthodontic Extrusion: An Aid to Salvage Subgingivally Fractured Incisor”. Journal of Chitwan Medical College, vol. 11, no. 3, Sept. 2021, pp. 138-40, https://www.nepjol.info/index.php/JCMC/article/view/40105.