1. Trace Elements in the Terrestrial Environment;Adriano,1986
2. The speciation and availability of cadmium and lead in polluted soils;Alloway,1984
3. Fluxes of Cu, Zn, Pb, Cr, and Ni in temperate forest ecosystems;Bergkvist;Water Air Soil Pollux.,1989
4. Heavy metal species, mobility and availability in soil Z;Bruemmer;Pflanzenernühr. Bodenkunde,1986
5. Impact of different compounds of Cd, Cu, Pb, and Zn on their speciation in soil and their contents of cereal plants;Chlopecka;Manuscript in Polish,1991