1. Periodontal treatment needs;Oliver;Periodontol 2000,1993
2. Compliance and its role in periodontal therapy;Wilson;Periodontol 2000,1996
3. Oral ecology and dental caries;Bowden,1994
4. Supragingival dental plaque in the etiology of oral diseases;Shibly;Periodontol 2000,1995
5. The state of the gingivae and caries increment in school children during and after withdrawal of various prophylactic measures;Koch,1970