Buzalaf, Marília Afonso Rabelo, et al. “ PH-Cycling Models for in Vitro Evaluation of the Efficacy of Fluoridated Dentifrices for Caries Control: Strengths and Limitations ”. Journal of Applied Oral Science, vol. 18, no. 4, Aug. 2010, pp. 316-34, https://doi.org/10.1590/S1678-77572010000400002.