1. A global view of oral diseases: today and tomorrow;Barmes;Community Dent Oral Epidemiol,1999
2. 2. Burt BA.Trends in caries prevalence in North American children. Int Dent J 1994;44:403-13.
3. 3. Nithila A, Bourgeois D, Barmes DE, Murtomaa H. WHO global oral data bank, 1986-96: an overview of surveys at 12 years of age. Bull World Health Organ 1998;76:237-44.
4. 4. National Oral Health Survey and Fluoride Mapping. An Epidemiological Study of Oral Health Problems and Estimation of Fluoride Levels in Drinking Water. Dental Council of India, New Delhi, 2004;32:67-78.
5. Dental caries prevalence and treatment needs among 12- and 15- Year old schoolchildren in Shimla city, Himachal Pradesh, India;Shailee;Indian J Dent Res,2012