Santos, Lucineide de Melo Santos, and José Ivo Limeira dos Reis. “Comparative Analysis of the Electronic and Radiographic Determination of Root Canal Length of Primary molars– an Ex Vivo Study”. Brazilian Journal of Oral Sciences, vol. 8, no. 4, Dec. 2008, pp. 189-92, doi:10.20396/bjos.v8i4.8642834.