Osores Plenge, F., J. C. Roca Reyes, W. Rosas Ramos, and N. Domínguez. “Presence of Pathogenic Bacteria in the Estuary of Surco River and La Chira Beach, Lima, Peru, June 2009”. ACTA MEDICA PERUANA, Vol. 26, no. 4, Dec. 2009, pp. 243 -46, http://54.39.98.165/index.php/AMP/article/view/1535.