Singh, V., Acharya, S., Patnaik, S. and Nanda, S.B. 2014. Comparative Evaluation of Frictional forces between different Archwire-bracket Combinations. Orthodontic Journal of Nepal. 4, 1 (Oct. 2014), 22–28. DOI:https://doi.org/10.3126/ojn.v4i1.11307.