1. Formation et development des structures dans les pates de ciment durcies;Sereda,1980
2. Pore structure, permeability and diffusivity as related to durability;Feldman,1986
3. Gypsum in cement;Frigione,1983
4. The influence of gypsum on the hydration and properties of Portland cement paste;Lerch,1946
5. Effect of added gypsum on compressive strength of Portland cement Clinker;Soroka;Bull. Am. Cer. Soc.,1983