1. Silver amalgam in clinical practice;Gainsford,1993
2. Clinical performance of amalgams with high content of copper;Leinfelder;Oper Dent,1980
3. Clinical evaluation of high-copper amalgam;Leinfelder;Gen Dent,1983
4. Exhaled mercury following removal and insertion of amalgam restorations;Reinhardt;J Prosth Dent,1983
5. Mercury release from dental amalgams;Pleva,1995