1. Physical properties of dental materials. Circular 433 of the National Bureau of Standards;Souder,1942
2. Present status of direct acrylic restorations;Salisbury;D. Digest,1950
3. Matrix retention in Class III and Class IV acrylic restorations;Meyer;D. Digest,1950
4. Acrylic as a restorative material;Malson;D. Digest,1950
5. Direct resinous filling materials: an investigation of Vita-filling;Paffenbarger;J.A.D.A.,1951