1. Use of steel staples in the formation of amalgam crowns on severely broken down teeth;Hyman;Philipp Dent Assoc,1960
2. Intracoronal pins;Johns;Br Dent J,1969
3. The use of pins in amalgam restorations;Leon;Apex,1971
4. Pin-retained amalgam restorations;Winstanley;Br Dent J,1971
5. Use of pins for retaining amalgam restorations: A synopsis;Watson;J Dent Assoc S Afr,1971