R.Nithya, A.Thirunavukkarasu, and C.Sivasankari. “REMOVAL OF HEAVY METAL CU (II) FROM AQUEOUS WASTE USING PARTHENIUM HYSTEROPHORUS (WHITE TOP WEED) - A LOW COST ADSORBENT”. International Journal of Advance Research in Engineering, Science & Technology, vol. 2, no. 9, Sept. 2015, pp. 34-37, https://ijarest.org/index.php/ijarest/article/view/293.