1. Adamson, A.W. 1982. Physical Chemistry of Surfaces, Fourth Edn. pp. 198–199, Wiley-Interscience, New York.
2. Arbiter, N. 1986. Mineral processing — Past, present and future. In: Advances in Mineral Processing, pp. 3–15. AIME.
3. Buchanan, R.E. and N.E. Gibbons. 1974. Bergey's Manual of Determinative Bacteriology, Eighth Edn. pp. 693–694. The Williams and Wilkins Co., Baltimore.
4. Dubel, J., R.W. Smith, M. Misra and S. Chen. 1992. Micro-organisms as chemical reagents: the hematite system. Minerals Eng. 5: 547–556.
5. Fuerstenau, D.W. 1984. Chemistry of flotation. In: Principles of Mineral Flotation. pp. 7–29. The Australisian Institute of Mining and Metallurgy.