M. S. Akhtar, A. Agarwal, M. A. Malick, S. Khan, S. Yadav, and S. Agarwal, “Evaluation of apical debris extrusion during root canal preparation using Hand K file, Revo S, Protaper Next and Wave One file system: An in vitro study.”, Univ J Dent Sciences, vol. 6, no. 2, pp. 16-21, Sep. 2020.