Ong, P.-S. et al. 2013. Utilization of Mango Leaf as a Low-Cost Adsorbent for the Removal of Cu(II) Ions from Aqueous Solution. Asian Journal of Chemistry. 25, 11 (Jun. 2013), 6141–6145. DOI:https://doi.org/10.14233/ajchem.2013.14290.