Araya Vergara, J. F. “Morphogenesis of the Zeta Form Embayment and the Associated Estuarine Terrace in Pichilemu: Prototype for Central Chile”. Investigaciones Geográficas, no. 37, Jan. 2003, pp. Pág. 41-65, doi:10.5354/0719-5370.2003.27747.