Askary M., Noori, M., Biegi, F., and Amini, F. (2012). Evaluation of the phytoremediation of Robinia pseudoacacia L. in petroleum- contaminated soils with emphasis on the some heavy metals. Journal of Cell and Tissue (JCT). 2(4): 437-442.
Bacon, J.R. and Dinev, N.S. (2005). Isotopic characterization of lead in contaminated soils rom the vicinity of a non-ferrous metal smelter near Plovdiv. Bulgaria. Environment Pollution. 134:247–255.
Bates, L.S., Waldren, R.P. and Teare. I.D. (1973). Rapid determination of free proline for water-stress studies. Plant and Soil. 39(1):205-207.
Broadley, M.R., White, P.J., Hammond, J.P., Zelko, I. and Lux, A. (2007). Zinc in plants. New Phytology. 173: 677–702.
Cakmak, I. (2000). Possible roles of zinc in protecting plant cells from damage by reactive oxygen species. New Phytology. 146: 185–205.
Chris DC. (2006). Implementing phytoremediation of petroleum hydrocarbons. methods in biotechnology. In: Willey N, Editor. Phytoremediation: Methods and Reviews. London, UK: Springer. 99-100.
Connell, S.L. and Al-Hamdani, S.H. (2001). Selected physiological responses of kudzu to different chromium concentrations. Canadian Journal of Plant Science. 81:33-58.
Fergusson, J.E., and Kim, N.D., (1991). Trace elements in stress and house dust: sources and speciation. Science of the Total Environment 100: 125-150.
Kochert, G. (1978). Carbohydrate determination by the phenolsulfuric acid method. In: Hellebust, J.A., Craigie, J.S., (eds). Handbook of Phycological Methods-Physiological and Biochemical Methods. Cambridge University Press, Cambridge. pp. 95–97.
Lichtenthaler, H.K. (1987). Chlorophylls and carotenoids: Pigments of photosynthetic biomembranes.Plant Cell Membranes. 148:350-382.
Maddah, S.M., Moraghebi, F., Kashani, Q., Farhangiyan, S. and Afdideh, F. (2015). Physical, physiological responses and resistance of acacia tree (Robinia pseudoacacia L.) under the influence of air pollution in Tehran. Environmental Plant Physiology Journal. 38: 56-48.
Marschner, H. (1995). Mineral nutrition of higher plants, 2nd edn. Academic Press, London.
Odjegba, J.V. and fasidi, I.O. (2004). Accumulation of trace elements by Pistia steatites: Implications for phytoremediation.
Ecotoxicology. 13(7): 637-46
Olumi, H., Rezanejad, F. and Keramat, B. (2016). Comparative study of biochemical parameters of Pinusnigra and P. elderica cultivated in the area around Sarcheshmeh copper complex and Kantuyeh. Environmental Plant Physiology Journal. 10(40): 1-12.
Pourkhabbaz, A.R., Rastin, N., Olbrich, A., Heyser, R.L. and Andrea, P. (2010). Influence of environmental pollution on leaf Properties of Urban Plane Trees, Platanus orientalis L. Bulletin of Environmental Contamination and Toxicology. 86: 251-255.
Schat, H. and Vooijs, R. (1997). Multiple tolerance and co-tolerance to heavy metals in Silene vulgaris: a co-segregation analysis. New Phytologist. 136: 489–496.
Shabanian N. and Cheraghi, CH. (2013). Comparison of phytoremediation of heavy metals by woody species used in urban forestry of Sanandaj city. Iranian Journal of Forest and Poplar Research.
1(51):154 - 165.
Shanker, A.K., Cervantes, C., Herminia, L. and Tavera, S.A. (2005). Chromium toxicity in plants. Environment International. 31: 739-753.
Vassilev, A. and Yordanov, I. (1997). Reductive analysis of factors limiting growth of cadmium treated plants: a review. Bulgarian Jornal of Plant Physiology. 23: 114- 113.
Zhou, M.P. and Oteiza, P.I. (2001). The antioxidant properties of zinc: interactions with iron and antioxidants. Free Radicals in Biology and Medicine. 31: 266–274.