1. Clinical restorative materials and techniques;Leinfelder,1988
2. Replacement of silver amalgam restorations by 50 dentists during 246 working days;Richardson;J Can Dent Assoc,1973
3. Frequency of amalgam replacement in general dental practice;Boyd;J Can Dent Assoc,1985
4. Flexural strength of joined and intact amalgam;Berge;Acta Odontol Scand,1982
5. Bond strength of mechanically condensed repaired high-copper amalgam;Gordon;Quint Int,1987