Sharma, M., D. C. Sharma, B. R. Adyanthaya, M. Bala, R. Soangra, and K. Kachhwaha. “Effect of Hand Files, Rotary Protaper Universal and Protaper Retreatment Files on Crack Formation in Dentin: An in Vitro Study”. International Journal of Health Sciences, vol. 6, no. S1, Apr. 2022, pp. 4253-64, doi:10.53730/ijhs.v6nS1.5831.