1. Sersale R. Structure et caracterization des pouzzolanes et des cendrs volantes. In: 7th Int Congr Chem Cem. Paris, I, IV––1/4–1/21, 1980. p. 4–21
2. Calleja J. Future trends in the research of the structure, properties and behaviour of blended cements In: Proceedings of the 8th Int Cong Chem Cem. Rio de Janeiro, 1986. p. 233–248
3. Chaniotakis E, Fragoulis D. INCO-Copernicus project No ERBIC15 CT96 0712. The usage of amorphous silica and hydrous aluminosilicates for the production of construction materials with improved mechanical properties. 1st year Progress Report of TITAN SA, 1 March 1997–28 February. 1998. p. 34
4. The influence of biogenic micro-silica-rich rocks on the properties of blended cements;Stamatakis;Cem. Concr. Comp,2003
5. Diatomaceous earth as a cement additive-A case study of deposits for Greece and Hungary;Fragoulis;ZKG Int. (Cement–Lime–Gypsum,2002