Siddegowda, R., and M. Rani. “Prevalence of Malocclusion in Four Zones of Karnataka State School Children Using Ackermann-Proffit System - An Epidemiological Survey”. Journal of Pierre Fauchard Academy (India Section), vol. 27, no. 4, Nov. 2018, pp. 113-7, http://informaticsjournals.com/index.php/jpfa/article/view/22672.