1. Brian J. Alloway. Heavy metals in soils. Trace elements and Metalloids in Soils and their Bioavailability. Third ed. Alloway Brian J. UK, Springer; 2010.
2. Ellenberg H. Ziele und Stand der Okosystemforschung. Okosystemforschung - Berlin : Springer-Verlag; 1973.
3. Ryzhenko N.O., Kavetsky S.V., Kavetsky V.M. Cd, Zn, Cu, Pb, Co, Ni Phytotoxicity Assessment as Function of Its Substance Polarity Shift. International Journal of Bioorganic Chemistry. 2(4): 163-173. doi: 10.11648/j.ijbc.20170204.12
4. Golubets M.A. Topical issues of ecology. Kyiv: Naukova Dumka; 1982.
5. Goncharuk E.A., Zagoskina N.V. Heavy metals: up-take, toxicity and protective mechanisms of plants (for example, cadmium ions). News of Kharkiv National Agricultural University. Biology. 2017; 1(40): 35-49.