1. Skinner’s science of dental materials;Phillips,1973
2. Properties of a silica-reinforced polymer for dental restoration;Bowen;JADA,1963
3. Observations on a composite resin for Class II restorations: three-year report;Phillips;J Prosthet Dent,1973
4. One and two year clinical evaluation of a composite resin versus amalgam;Osborne;Abstracted, J Dent Res,1973
5. Clinical comparison of two anterior restorative materials;Ryge;Research protocol prepared by Dental Materials and Technology Program,1965