Ochoa, Luis, et al. “Evaluation of Success and Or Failure of Endodontic Treatment in Non-Vital Teeth Performed at the School of Dentistry at the Universidad Del Valle. Case Series”. Revista Estomatología, vol. 22, no. 2, July 2014, pp. 13-19, https://doi.org/10.25100/re.v22i2.5777.