1. J. BENSTED and S. PRAKASH VARMA,Cement Technol. (January/February 1974) 256.
2. Idem, ibid. (July/August 1974) 378.
3. H. F. W. TAYLOR, ?The Chemistry of Cements?, Vol. 2 (Academic Press, London, 1964).
4. F. TAM�S and T. VARADY,Hung. J. Ind. Chem., Veszpi�m 3 (1975) 347.
5. J. GEBAUER and A. B. HARNIK,Cement Concrete Res. 5 (1975) 163.