Sivakumar, K., Balamurugan, C., Ramakrishnan, D., & Dheenadayalan, M. (2012). Heavy Metal Removal from Aqueous Solution by Tamarind and Neem Leaves. Asian Journal of Chemistry, 24(10), 4686–4688. Retrieved from https://asianpubs.org/index.php/ajchem/article/view/9621