1. A critical look at posterior composite restorations;Lacy;JADA,1987
2. One-year observations on a composite resin for Class II restorations;Phillips;J Prosthet Dent,1971
3. Observations on a composite resin for Class II restorations: two-year report;Phillips;J Prosthet Dent,1972
4. Observations on a composite resin for Class II restorations: three-year report;Phillips;J Prosthet Dent,1973
5. Criteria for the clinical evaluation of dental restorative materials;Cvar,1971