Gutiérrez Torero, Mariano, Naldi Herrera Almirón, and Dora Marín Sánchez. 1999. “Distribution and Abundance of Peruvian Anchovy and Other Pelagic Species Between El Niño 1982-83 and 1997-98”. Boletin Instituto Del Mar Del Perú 18 (1-2):77-88. https://revistas.imarpe.gob.pe/index.php/boletin/article/view/171.