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2. Posnjak, E.,Amer. J. Sci. (1940).
3. Antolini, P., in Proceedings of the RILEM International Symposium on Calcium Sulfates and Derived Materials, Saint-Rémy-lès-Chevreuse, France, May 25–27, 1977.
4. Israeli Standard 198 (1993): Hemihydrate building gypsum.
5. Karni, J., ‘Suggestions for the use of gypsum semihydrate in the local building industry’ (in Hebrew), ‘Researches’, No. 4 (Building Research Station, Technion—Israel Institute of Technology, 1956).