Foco, M. L. R., and F. J. Cuba Terán. “Condutivity Effect in Electro-Coagulation-Flotation Applied to Physico-Chemical Wastewater Treatment”. Semina: Ciências Exatas E Tecnológicas, vol. 28, no. 2, Dec. 2007, pp. 99-106, doi:10.5433/1679-0375.2007v28n2p99.