Wilson, G.H.: Manual of Prosthetic Dentistry, Philadelphia, 1920, Lea & Febiger, p. 78.
2.
Scheu, C.H.: A New Precision Casting Technic, J. A. D. A. 19: 630, 1933.
3.
Smyd, E.S.: Factors Which Influence Casting Accuracy: A Universal Casting Technic, J. A. D. A. 36: 160-172, 1948.
4.
Docking, H.R. : The Hygroscopic Setting Expansion of Dental Casting Investments, Parts I, II and III, Austral. J. Den.52: 6-11; 160-166; 320-329, 1948.
5.
Hollenback, G.M.: Precision Gold Inlays Made by a Simple Technic, J. A. D. A. 30: 99-109, 1943.
6.
Coy, H.D. : Important Factors in Making Satisfactory Small Castings, New YorkJ. Den. 20: 105-109, 1950.
7.
Degni, F.: Hygroscopic Expansion of Dental Investments, Thesis, Northwestern University Dental School, 1946.
8.
Landgren, N.: Hygroscopic Expansion of Some Casting Investments, Thesis, University of Michigan School of Dentistry, 1949.
9.
Kelly, K.K., Southard, J.C., and Anderson, C.T.: Thermodynamic Properties of Gypsum and Its Dehydration Products, Bureau of Mines Technical Paper 655, 1941.
10.
Winchell, A.N. : Microscopic Character of Artificial Minerals, New York, 1931, John Wiley & Sons, Inc. , pp. 226-229.
11.
Lazarev, B.G. , and Kan, L.: Method for Obtaining High Pressures at Low Temperatures, J. Physics (USSR)8: 193-200; J. Exper. & Theor. Physics (USSR)14: 439-47, 1944.