T. SHEHNAZ BEGUM, et al. “EICHHORNIA CRASSIPES: A HYDROPHYTE REMOVES CHROMIUM IN INDUSTRIAL WASTEWATERS. A ECO-FRIENDLY PHYTOREMEDIAL PLANT SOURCES”. International Journal of Pharma and Bio Sciences, vol. 7, no. 2, June 2016, pp. 517-23, https://ijpbs.net/index.php/journal/article/view/5096.