1. Allen, W.C., 1996. Superplasticizer-cement composition for waste disposal. US Patent 5,551,976.
2. Bourcier, W., Ralph, W., Johnson, M., Bruton, C., Gutierrez, P., 2006. Silica extraction at Mammoth Lakes, California. Lawrence Berkeley National Laboratory Report UCRL-PROC-224426. Livermore, CA, USA, 6 pp.
3. Doran, G.F., Williams, K.L., Drago, J.A., Huang, S.S., Leong, L.Y.C., 1998. Pilot study results to convert oil field produced water to drinking water or reuse. Paper presented at 1998 SPE Annual Technical Conference and Exhibition, 27–30 September. New Orleans, LA, USA, SPE Paper 49124, 15 pp.
4. Recovery of base metals from geothermal waters;Duyvesteyn;Geothermics,1992
5. Featherstone, J.L., 1988. Process for removing silica from silica-rich geothermal water. US Patent 4,765,913.