D. Pešić, I. Melih, V. Kolak, A. Nikitović, M. Lalović, and A. Jakovljević, “Efficacy of several rotary systems in removal of two different obturation materials during endodontic retreatment”, Vojnosanit Pregl, vol. 76, no. 9, May 2021, doi: 10.2298/VSP170925183P.