@article { macsangou2008, author = "Machado, Manuela D. and Santos, Mónica S. F. and Gouveia, Cláudia and Soares, Helena M. V. M. and Soares, Eduardo V.", title = "Removal of heavy metals using a brewer?s yeast strain of Saccharomyces cerevisiae: the flocculation as a separation process", year = "2008" }