1. Pozzolanic and Cementitious Materials;Malhotra,1996
2. Comparative study of structure of silica gels from different sources;Kamiya;Journal of Sol-Gel Science and Technology,2000
3. P.K. Mehta, Siliceous ashes and hydraulic cements prepared there from, U.S. Patent, 1978.
4. The combined benefits of CPF and RHA in improving the durability of concrete structures;Coutinho;Cement & Concrete Composites,2003
5. High-performance concrete incorporating rice husk ash as a supplementary cementing material;Zhang;Aci Materials Journal,1996