Karthik, K., and P. Sharavanan. “Effects of Hexavalent Chromium on Growth , Phytotoxicity , Tolerance Index of Cosmos Bipinnatus, Cav. And Celosia Cristata, L. - Phytoremediation”. Journal of Aridland Agriculture, vol. 2, May 2016, pp. 18-21, doi:10.19071/jaa.2016.v2.298487.