1. 3) R. Koide, C. Tokoro, S. Murakami, T. Adachi and A. Takahashi:Mine Water Environ, 31 (2012) , 287–296.
2. 4) M. Sengupta : “Environmental impacts of Mining”, Lewis Publishers, p.22-55, 1993.
3. 5) U.S. Geological Survey (2005) PHREEQC Release notes. USGS, Denver, CO, USA.
4. 6) Parkhurst DL, Appelo CAJ (1999) User’s Guide to Phreeqc (version2) —a computer program for speciation, batch-reaction, one-dimensional transport, and inverse geochemical calculations.USGS WRI report 99-4259, Denver, CO.
5. 7) S. Bringezu, H. Schütz and S. Moll: Journal of Industrial Ecology, 7 (2003) , 43-64.