1. Dahlin, D.C., and Fergus, A.J., 1978, “Flotation of Carbonate and Silica Minerals from Partially Altered Phosphate Rock of the Phosphoria Formation,” Technical Economic Conference, October, pp. 37–47.
2. Dufour, P., et al., 1980, “Beneficiation of South Florida Phosphate Rock with Higher Carbonate Content,” Proceedings—2nd International Congress on Phosphorous Compounds, April, pp. 247–267.
3. Gregory, G.R.E.C., 1966, “The Dermination of Residual Anionic Surface—Active Reagents in Mining Flotation Liquors,” Analyst, Vol. 91, April, pp. 251–257.
4. Iwasaki, I., and Soto, H., 1982, “Fundamentals of Flotation,” Reports submitted to the International Minerals and Chemical Corp., Bartow, FL, private communication with Lawver, J.E., and Snow, R.E., February.
5. Johnston, D.J., and Leja, J., 1978, “Flotation Behavior of Calcium Phosphates and Carbonates in Orthophosphate Solution,” IMM Transactions, Vol. 87, December, pp. C237–242.