1. Dental materials for posterior restorations;Rykke;Endod Dent Traumatol,1992
2. In vivo wear measurement of composite resins;Eick,1985
3. In vivo occlusal wear of posterior composite restorations;Lewis;Oper Dent,1991
4. Clinical criteria;Ryge;Int Dent J,1980
5. Beiträge zur entwickelung von seitenzahn-komposits;Lutz;KAR PAR PSM Zurich,1980