Anđelković, T., Nikolić, R., Bojić, A., Anđelković, D. and Nikolić, G. 2010. Binding of cadmium to soil humic acid as a function of carboxyl group content. Macedonian Journal of Chemistry and Chemical Engineering. 29, 2 (Dec. 2010), 215–224. DOI:https://doi.org/10.20450/mjcce.2010.168.