1. 1S. Mindess, and J. F. Young , Concrete ; pp.99 100 . Prentice Hall. Englewood Cliffs, NJ. 1981 .
2. Physical structure of hardened cement paste. A classical approach
3. 5T. C. Powers , "Physical Properties of Cement Paste ," Procecdings of the Fourth International Conference on the Chemistry of Cement (Washington, D.C., 1960). U.S. National Bureau of Standards Monograph 43, Vol. 2, 577 613 (1962 ).