Dayal, Shubham, et al. “Comparison of Angular and Linear Measurements of Soft Tissue Profile Between Cephalograms and Photograph in Subjects With Class I and II Malocclusion in North Indian Population- A Comparative Study”. Journal of Orofacial Research, vol. 8, no. 3, Aug. 2019, pp. 48-54, https://www.mansapublishers.com/jofr/article/view/1685.