C. A. Madera-Parra, E. J. Peña-Salamanca, and J. A. Solarte-Soto, “Effect of heavy metal concentration on the physiological responses and heavy metal accumulation of three tropical plant species used for phytoremediation of landfill leachate”, inycomp, vol. 16, no. 2, pp. 179–188, Dec. 2014.