Gómez Ortiz, J. F., M. Ballesteros Lozano, e A. Flores Ledesma. “Radiographical Assessment of Initial and Final Tipping in 60 Patients Treated Without Extractions at the Orthodontics Clinic of the DEPeI, UNAM 2010-2012”. Revista Mexicana De Ortodoncia, vol. 5, nº 1, abril de 2017, doi:10.1016/j.rmo.2017.03.030.