Gutiérrez Torero, M., N. Herrera Almirón, and D. Marín Sánchez. “Distribution and Abundance of Peruvian Anchovy and Other Pelagic Species Between El Niño 1982-83 and 1997-98”. Boletin Instituto Del Mar Del Perú, vol. 18, no. 1-2, Dec. 1999, pp. 77-88, https://revistas.imarpe.gob.pe/index.php/boletin/article/view/171.