1. S. Goldberg, I. Lebron, D.L. Suarez, in Handbook of Soil Science, ed. by P.M. Huang (CRC, Boca Raton, 2000), p. 195
2. D.L. Sparks (ed.), Soil Physical Chemistry (CRC, Boca Raton, 1999)
3. G. Sposito, in Handbook of Soil Science, ed. by M.E. Sumner (CRC, Boca Raton, 2000), p. 241
4. B.J. Alloway (ed.), Heavy Metals in Soils, 2nd edn. (Blackie Academic and Professional, Glasgow, 1990)
5. S. Capasso, S. Salvestrini, E. Coppola, A. Buondonno, C. Colella, Appl. Clay Sci. 28(1–4), 47 (2005). doi: 10.1016/j.clay.2004.01.010