1. Microorganisms of the Human Mouth;Miller,1890
2. Caries-susceptibility tests;Socransky;Ann NY Acad Sci,1968
3. Caries activity tests;Bowen;Int Dent J,1969
4. Present and future measures for dental caries control;Keyes;JADA,1973
5. Caries risk assessment: Relevance to the practitioner;Powell;JADA,1998