SCHNEIDER, S. A., SALEH, A. Yu. and DENGA, O. V. The state of mineralizing properties of the saliva in children with gastroesophageal reflux disease. Journal of Education, Health and Sport. Online. 31 August 2020. Vol. 10, no. 8, pp. 518-525. [Accessed 11 September 2024]. DOI 10.12775/JEHS.2020.10.08.063.