Dahiya, S., G. Negi, A. Arya, and P. Chitra. “The Extraction-Non Extraction Conundrum and the Role of Self Ligation in Present Day Mechanotherapy”. Orthodontic Journal of Nepal, vol. 8, no. 2, Dec. 2018, pp. 60-67, doi:10.3126/ojn.v8i2.23074.