1. http://www.epa.gov/glnpo/bnsdocs/hgsbook/metal.pdf- assessed at March 29, 2004.
2. M.?M. Veiga, Introducing New Technologies for Abatement of Global Mercury Pollution in Latin America, UNIDO/UBC/CETEM/CNPq, Rio de Janeiro 1997.
3. Metal Ions In Biological Systems - Mercury and Its Effects on Environment and Biology, Vol.?34, Marcel Dekker, New York 1994.
4. Ecological effects, transport, and fate of mercury: a general review