1. Plaster as an impression material;George;Am J Dent Sci,1869
2. Metals suitable for dies and counter-dies;Austin;Am Dent Review,1858
3. Objectives of impression taking;White;Dent Cosmos,1894
4. Six fundamental rules for making full denture impressions;Fisher;J Prosthet Dent,1951
5. Complete denture impression technique;Klein;J Prosthet Dent,1955