1. Amin B, Ismail A, Arshad A, Yap CK, Kamarudin MS (2009) Anthropogenic impacts on heavy metal concentrations in the coastal sediments of Dumai, Indonesia. Environ Monit Assess 148:291–305
2. Diatta JB, Grzebisz W, Apolinarska K (2003) A study of soil pollution by heavy metals in the city of Poznań (Poland) using dandelion (Taraxacum officinale Web) as a bioindicator. EJPAU Environ Dev 6(2) ( http://www.ejpau.media.pl/articles/volume6/issue2/environment/art-01.pdf )
3. Djingova R, Kuleff I (1993) Monitoring of heavy metal pollution by Taraxacum officinale. In: Markert WB (ed) Plants as biomonitors. Indicators for heavy metals in terrestrial environment. New York, NY, VCH, pp 435–460
4. Doğanlar Z, Atmaca M (2011) Influence air borne pollution on Cd, Zn, Pb, Cu and Al accumulation and physiological parameters of plant leaves in Antakya (Turkey). Water Soil Poll 214(1/4):509–523
5. Framework guidelines for agriculture (1993) Assessment of the state of pollution of soils and plants heavy metals and sulfur. JUNG, Puławy