Ali, H., Khan, E., and Sajad, M. A., 2013, Phytoremediation of heavy metals—concepts and applications: Chemosphere, v. 91, no. 7, p. 869-881.
Doelsch, E., Saint Macary, H., and Van de Kerchove, V., 2006, Sources of very high heavy metal content in soils of volcanic island (La Réunion): Journal of Geochemical Exploration, v. 88, no. 1, p. 194-197.
Kříbek, B., Majer, V., Veselovský, F., and Nyambe, I., 2010, Discrimination of lithogenic and anthropogenic sources of metals and sulphur in soils of the central-northern part of the Zambian Copperbelt Mining District: a topsoil vs. subsurface soil concept: Journal of geochemical Exploration, v. 104, no. 3, p. 69-86.
Türkdoğan, M. K., Kilicel, F., Kara, K., Tuncer, I., and Uygan, I., 2003, Heavy metals in soil, vegetables and fruits in the endemic upper gastrointestinal cancer region of Turkey: Environmental toxicology and pharmacology, v. 13, no. 3, p. 175-179