1. Water fluoridation: a review of recent research and actions;Kauffman;J. Am. Physicians Surg.,2005
2. Fluoride in Drinking Water: a Scientific Review of EPA's Standards;National Research Council (NRC),2006
3. Guidelines for Drinking-water Quality (GDWQ);World Health Organization (WHO),2004
4. Fluoride in Drinking Water;World Health Organization (WHO),2006
5. Is systemic fluoride supplementation for dental caries prevention in children still justifiable?;Oganessian;Pragur. Med. Rep.,2007