1. Smyd, E.S.: Metal Inlays, American Textbook of Operative Dentistry, Philadelphia, 1947, Lea and Febiger, p. 373.
2. Souder, W., and Paffenbarger, G.C. : Physical Properties of Dental Materials, National Bureau of Standards, C433, 1942, p. 101.
3. Souder, W., and Paffenbarger, G.C. : Physical Properties of Dental Materials, National Bureau of Standards, C433, 1942, p. 103.
4. Smyd, E.S.: Metal Inlays, American Textbook of Operative Dentistry, Philadelphia, 1947, Lea and Febiger, p. 374.