Giri, Jamal, et al. “Angular Relationship Between Frankfort Horizontal Plane and Sella-Nasion Plane in Nepalese Orthodontic Patients: A Cephalometric Study”. Orthodontic Journal of Nepal, vol. 7, no. 1, June 2017, pp. 14-17, doi:10.3126/ojn.v7i1.18895.