Gajardo, Nathalie, Humberto E González, and Margarita Marchant. 2013. “Characterization of El Niño, La Niña, and Normal Conditions through Planktonic Foraminifera (2006–2007) in the Southeastern Pacific”. Ciencias Marinas 39 (3):253-64. https://doi.org/10.7773/cm.v39i3.2177.