Kouwenhoven, T. J.; Hilgen, F. J.; van der Zwaan, G. J. (2003): Late Tortonian-early Messinian stepwise disruption of the Mediterranean-Atlantic connections; constraints from benthic foraminiferal and geochemical data. Elsevier, Amsterdam, Netherlands, Palaeogeography, Palaeoclimatology, Palaeoecology, 198 (3-4), 303-319, georefid:2003-076479