1. 1 P. Mondal and W. Jeffery , “The Crystal Structure of Tricalcium Aluminate, Ca3Al2O6,” Acta Cryst., 31, 689-97 (1975).
2. 2 G. M. Pharr , W. C. Olivier , and F. R. Brotzen , “On the Generality of the Relationship among Contact Stiffness, Contact Area, and Elastic Modulus During Indentation,” J. Mater. Res., 78 [3] 613-7 (1992).
3. 3 K. Velez , S. Maximilien , D. Damidot , G. Fantozzi , and F. Sorrentino , “Determination by Nanoindentation of Elastic Modulus and Hardness of Pure Constituents of Portland Cement Clinker,” Cem. Concr. Res., 31, 555-61 (2001).
4. Cement chemistry