M.V. Ayme Estacio, C.A. Castaneda-Olivera, E.G. Benites Alfaro, Eichhornia Crassipes and Pistia Stratiotes as Biosorbents for Lead, Copper and Zinc in Wastewater Treatment, Chemical Engineering Transactions. 93 (2022) 19-24. doi:10.3303/CET2293004.