Angelakis, A.N. and Spyridakis, S., 1996. The Status of Water Resources in Minoan Times, A Preliminary Study, Diachronic Climatic Impacts on Water Resources in Mediterranean Region. Springer-Verlag, Heidelberg, Germany, 111-113.
Bitts´anszky, A., Gyulai, G., Gullner, G., Kiss, J., Szab´o, Z., K´atay, G., Heszky, L. and K¨om´ıves, T., 2009. In vitrobreeding of grey poplar (Populus × canescens) for phytoremediation Purposes. Journal of Chemical Technology and Biotechnology, 84: 890-894.
Kabata-Pendias, A., 2011. Trace Elements in Soils and Plants, 4th edition. CRC Press, Boca Raton, 505p.
Maanan, M., Saddik, M., Maanan, M., Chaibi, M., Assobhei, O. and Zourarah, B., 2014. Environmental and ecological risk assessment of heavy metals in sediments of Nador lagoon, Morocco. Ecological Indicators, 48: 616–626.
Nabizadeh, R. Mahvi, A., Mardani, G. and Yunesian, M., 2005. Study of heavy metals in urban runoff. International Journal of Environmental Science and Technology, 1(4): 325-333
Pulford, I.D. and Dickinson, N.M., 2005. Phytoremediation technologies using trees. In: Prassad M.N.V. and Naidu, R., (Eds.), Trace elements in the environment. New York, CRC Press, 375-395.
Rattan, R.K., Datta, S.P., Chhonkar, P.K., Suribabu, K. and Singh, A.K., 2005. Long-term Impact of Irrigation with Sewage Effluents on Heavy Metal Content in Soils, Crops and Groundwater a case study. Agriculture, Ecosystems and Environment, 109: 310-322.
Rinklebe, J., Antoniadis, V., M. Shaheen, S., Rosche, O. and Altermann, M., 2019. Health risk assessment of potentially toxic elements in soils along the Central Elbe River, Germany. Environment International, 126:76-88.
Sharma, R.K., Agrawal, M. and Marshall, F., 2007. Heavy metal contamination of soil and vegetables in suburban areas of Varanasi. India. Ecotoxicology and Environmental Safety, 66: 258-266.
Utmazian, M.N.D., Wieshammer, G., Vega, R. and Wenzel, W.W., 2007. Hydroponic screening for metal resistance and accumulation of cadmium and zinc in twenty clones of willows and poplars. Environmental Pollution, 148: 155-165.
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