V. Ambarkova, O. Kokoceva-Ivanovska, N. Stavreva, J. Ambarkov, and T. Karakamcev, “The Correlation Between the DMFT of the 15-year-old Children and the Concentration of Fluoride in Drinking Water from the East Region of the Republic of Macedonia”, Open Access Maced J Med Sci, vol. 10, no. D, pp. 260–266, Jun. 2022.