Mutterlose, Joerg; Linnert, Christian; Norris, Richard D. (2007): Calcareous nannofossils from the Paleocene-Eocene thermal maximum of the Equatorial Atlantic (ODP Site 1260B); evidence for tropical warming. Elsevier, Amsterdam, Netherlands, Marine Micropaleontology, 65 (1-2), 13-31, georefid:2008-065962