Szakova, J., Tlustos, P., Balik, J., Pavlikova, D., & Balikova, M. (2001). Application of Sequential Extraction Procedure to Evaluation of Influence of Sewage Sludge Amendment on Cd and Zn Mobility in Soil. Chemické Listy, 95(10). Získáno z http://www-.chemicke-listy.cz/ojs3/index.php/chemicke-listy/article/view/2383