Armas-Vega, Ana Del Carmen, et al. “Restorative Procedures in Posterior Teeth Placed During a Graduation Course Clinic: Quantitative Evaluation about Amalgam Versus Composite Resin”. Brazilian Journal of Oral Sciences, vol. 5, no. 19, Jan. 2016, pp. 1209-12, doi:10.20396/bjos.v5i19.8642948.