E. C. Oliveira-Filho, M. G. Ramos, I. S. Freire, e D. H. de F. Muniz, “<b>Comparison between the efficiency of two bioindicators for determining surface water quality in an urban environment</b&gt; - doi: 10.4025/actascibiolsci.v33i3.7725”, Acta Sci. Biol. Sci., vol. 33, nº 3, p. 311-317, abr. 2011.