Vásquez, G., G. Corsini, and V. Beltrán. “Diagnosis, Treatment Planning and Root Canal of a Lower First Premolar With Two Canals Using 3D Computed Tomography: Case Report.”. Journal of Oral Research, Vol. 7, no. 9, Dec. 2018, pp. 378-82, doi:10.17126/joralres.2018.083.