D. Angerame, M. De Biasi, M. Lenhardt, L. Bevilacqua, and V. Franco, “Survival study on teeth after successful endodontic surgical retreatment: influence of crown height, root length, crown-to-root ratio and tooth type”, G Ital Endodon, vol. 32, no. 2, pp. 63–69, Feb. 2019.