1Kabir E, Ray S, Kim KH, et al. 2012, Current status of trace metal pollution in soils affected by industrial activities. Scientific World Journal, 2012:916705.
3Pizzo M, Thomsen M, Fmhn LM, et al. 2010, External costs of at- mospheric Pb emissions: valuation of neumtoxie impacts due to inha- lation. Environmental Health, 9 ( 1 ) : 9.
10Ulla AJ, Patrieka VC-VH, Ulla SL, et al. 2000, Organic acids pro- duced by mycorrhizal Pinus sylvestris exposed to elevated aluminium and heavy metal concentrations. New Phytologist, 146 (3) : 557 - 576.