1. Oral health care in Finland;Widström,1998
2. Decrease in and polarization of dental caries occurrence among child and youth populations, 1976–1993;Vehkalahti;Caries Res,1997
3. The Prevalence of Dental Caries in Europe 1990–1995. Symposium Report;Caries Res,1996
4. Systems for the Provision of Oral Health Care, Workforce and costs in the EU and EEA.– A Council of European Chief Dental Officers Survey,1999
5. Ohjeet vuonna 1961 ja sen jälkeen syntyneiden järjestelmällisestä hammas-huollosta (In Finnish: Instructions about the comprehensive dental care of persons born in 1961 or later),1985