Molina-Cruz, A. (1997): Closing of the Central American Gateway and its effects on the distribution of late Pliocene radiolarians in the eastern tropical Pacific. Elsevier, Amsterdam, Netherlands, In: Tsuchi, Ryuichi (editor), Nishimura, Susumu (editor), Beu, Alan G. (editor), Neogene evolution of the Pacific; tectonics of gateways and associated responses, 281 (1-2), 105-111, georefid:1998-011009