Nederbragt, Alexandra J. (1999): Quantitative biogeography of Cretaceous planktonic Foraminifera from the North Atlantic and circum-Mediterranean. E. Schweizerbart'sche Verlagsbuchhandlung, Stuttgart, Federal Republic of Germany, In: Kuhnt, Wolfgang (editor), Erbacher, Jochen (editor), Graefe, Kai-Uwe (editor), Wiedmann, Jost, Contributions to Cretaceous stratigraphy and palaeobiogeography in honor of Jost Wiedmann, 212 (1-3), 263-288, georefid:2001-017960