Bergen, James A.; Gardin, Silvia (1993): Tethyan late Bathonian to Tithonian nannofossil biostratigraphic events from SE France and DSDP Site 534; emphasis on Callovian events and regional correlations (Portugal & northwest Europe). International Nannoplankton Association, The Hague, International, In: Young, Jeremy R. (editor), Bown, Paul R. (editor), International Nannoplankton Association; 5th conference; abstracts, 15 (2), 54, georefid:2007-027716