1. Type III gold alloy complete crowns cast in a phosphate-bonded investment;Cooney;J Prosthet Dent,1981
2. Long term cost of restorative therapy using different materials;Mjor;Scand J Dent Res,1992
3. Contemporary fixed prosthodontics. 3rd ed;Rosenstiel,2000
4. Reasons for placement, replacement, and age of gold restorations in selected practices;Mjor;Oper Dent,1993
5. Phillips' science of dental materials;Anusavice,1996