БОЙКО, І. А. Monitoring fluorine, one of priority elements of underground drinking-water of the Poltava hydrochemical province. Scientific Progress & Innovations, [S. l.], n. 2, p. 212–216, 2012. DOI: 10.31210/visnyk2012.02.42. Disponível em: https://journals.pdau.edu.ua/visnyk/article/view/621. Acesso em: 4 sep. 2025.