Manandhar, P., A. Rajbhandari, R. Pradhan, M. Bajracharya, and S. Maharjan. “Pain in the Separation of Molars Among the Orthodontic Patients”. Europasian Journal of Medical Sciences, Vol. 1, no. 1, May 2020, pp. 48-52, http://nepmed.nhrc.gov.np/index.php/EJMS/article/view/799.