Fudali-Walczak, Magdalena, Grzegorz Raba, and Beata Obłoza. 2015. “Saliva PH Testing in Predicting Dental Caries in Children Aged 7–10 Years”. European Journal of Clinical and Experimental Medicine 13 (2):90–94. https://doi.org/10.15584/przmed.2015.2.2.