J. J. Beaudoin, R. F. Feldman: Dependence of degree of silica polymerization and intrinsic mechanical properties of C-S-H on C/S ratio, 8th International Congress on the Chemistry of Cement, Rio de Janeiro, Brazil, September 22-27, pp. 1-6(1986)
H. F. W. Taylor: Cement Chemistry, 2nd Edition, Thomas Telford (1997)