1. Information and Science, Fact about fluorine, 2003. 〈http://theinfoscience.blogspot.kr/2016/03/fact-about-fluorine〉.
2. C. Nagendra Rao, Fluoride and environment – a review, in: Martin J. Bunch, V. Madha Suresh, T. Vasantha Kumaran (eds.), Proceedings of the Third International Conference on Environment and Health, Chennai, India, 15–17 December, Department of Geography, University of Madras, Chennai and Faculty of Environmental Studies, York University, 2003, pp. 386–99.
3. Fluoride contamination in groundwater: a global review of the status, processes, challenges, and remedial measures;Shaji;Geosci. Front.,2024
4. Fluoride occurrence in groundwater systems at global scale and status of defluoridation–state of the art;Kimambo;Groundw. Sustain. Dev.,2019
5. Global analysis and prediction of fluoride in groundwater;Podgorski;Nat. Commun.,2022