1. G.L. Hubred: Mar. Min., 1980, vol. 2, pp. 191–212.
2. D.W. Fuerstenau and K.N. Han: Min. Proc. Technol. Rev., 1983, vol. 1, pp. 1–83.
3. H.L. Ehrlich: Geomicrobiology, 2nd ed., Marcel Dekker, Inc., New York, NY, 1990, pp. 347–440.
4. K.H. Nealson, R.A. Rosson, and C.R. Myers: in Metal Ions and Bacteria, T.C. Beveridge and R.J. Doyle, eds., John Wiley and Sons, Inc., New York, NY, 1989, pp. 383–411.
5. K. Imai: in Metallurgical Applications of Bacterial Leaching and Related Microbiological Phenomena, L.E. Murr, A.E. Torma, and J.A. Brierley, eds., Academic Press, New York, NY, 1978, pp. 275–95.