Barros, André Luiz Raposo, et al. “RESISTANCE TO HEAVY METALS, ANTIMICROBIAL AND BIOFILM FORMATION IN ESCHERICHIA COLI ISOLATED FROM BEACHES OF SANT LUIS - MARANHÃO”. Revista De Patologia Tropical Journal of Tropical Pathology, vol. 43, no. 3, Oct. 2014, pp. 277-89, doi:10.5216/rpt.v43i3.32213.