1. Battle, T.P., Leary, K.J., Reeves, J.W., 1996. Reduction segregation of ilmenite: iron and titanium coproducts from solid state processing. In: Proceedings of International Symposium on Extraction and Processing for the Treatment and Minimization of Wastes, Scottsdale, AR, pp. 427–446.
2. Battle, T.P., Nguyen, D., Reeves, J.W., 1993. The processing of titanium containing ores. In: Proceedings of Symposium on Extractive Metallurgy of Copper, Nickel and Cobalt, Vol. 1, Warrendale, PA, pp. 925-943.
3. USGS Minerals Information, 1996. Mineral Commodity Summaries. Web page: http:/minerals.er.usgs.gov/minerals/pub/mcs/
4. Ney, P., 1973. Zeta Potenzial und Flotierbarkeit von Mineralen. Springer Verlag, Vienna, NY, 136 pp.
5. Selective coagulation in quartz-hematite and quartz-rutile suspensions;Pugh;Colloid Polymer Sci.,1974