1. Coughtrey, P. J.; Jackson, D.; Jones, C. H.; Thorne, M. C. Radionuclide Distribution and Transport in Terrestrial and Aquatic Ecosystems; A. A. Balkema:Rotterdam, 1984; Vol.V, Chapter 31:Americium, pp1-3.
2. Coughtrey, P. J.; Jackson, D.; Jones, C. H.; Kane, P.; Thorne, M. C. Radionuclide distribution and transport in terrestrial and aquatic ecosystems; A. A. Balkema:Rotterdam, 1984; Vol.IV, Chapter 29:Plutonium, pp1-93.