Hongal, Sudheer, Shrinivas Basavaraddi, Gururaj Patil, Poornima Hongal, and Vijaylaxmi Basavaraddi. 1970. “Facial Photographs and Study Models in Assessment of Orthodontic Treatment Needs: A Comparative Study”. Journal of Orofacial Research 2 (3): 127-30. https://www.mansapublishers.com/jofr/article/view/1758.