Pentelescu, C., L. Colceriu, O. Pastrav, C. Culic, and R. Chisnoiu. “In Vitro Evaluation of Root Canal Preparation With Two Rotary Instrument Systems – Pro Taper and Hero Shaper”. Medicine and Pharmacy Reports, vol. 88, no. 3, June 2015, pp. 395-02, doi:10.15386/cjmed-454.