Kafle, D., S. Shrestha, N. Acharya, and A. Agarwal. “Prevalence of Maxillary Central Incisor Impaction and Supernumerary Teeth Among Nepalese Orthodontic Patients”. Orthodontic Journal of Nepal, vol. 5, no. 2, Dec. 2015, pp. 14-16, doi:10.3126/ojn.v5i2.15218.