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2.
Idem: Precision Casting Utilizing the Hygroscopic Action of Plaster in Investment in Making Expanded Molds, J. A. D. A. 20: 1205, 1933.
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8.
Lyon, H.W., Dickson, G., and Schoonover, I.C. : Progress Report on the Mechanism of Hygroscopic Expansion in Dental Casting Investments, NBS Report No. 2242, Feb., 1953.
9.
Van't Hoff, J.H., Armstrong, E.E., Hinrichsen , S., Weigert, F., and Just, G.: Gips und Amhydrid , Ztschr. physiol. Chem., Stochiometrie und Verwandtschaftlehre45: 257, 1903.
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Mahler, D.B. : The Water Added Technic for Hygroscopic Expansion, Read Before the Dental Materials Group of the I.A.D.R., March, 1954.
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Bonnell, D.R.G. : Some Problems Connected With Porous Building Materials, Chem & Ind. 16: 193, 1938.
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Mahler, D.B. , and Asgarzadeh, K.: The Volumetric Contraction of Dental Gypsum Materials on Setting, J. D. Res:32: 354, 1953.
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