Rajeshkannan, R. , Rajasimman, M. , Rajamohan, N.. "Removal of Malachite Green from Aqueous Solution using Hydrilla verticillata -Optimization, Equilibrium and Kinetic Studies". World Academy of Science, Engineering and Technology, Open Science Index 37, International Journal of Environmental and Ecological Engineering (2010), 4(1), 23 - 30.