1. A revised Cenozoic geochronology and chronostratigraphy Berggren, William A.; Kent, Dennis V.; Swisher, Carl C.; Aubry, Marie-Pierre 1995 Articles Geology, StratigraphicPaleontology
2. Mid-Neogene Mediterranean marine-continental correlations: an alternative interpretation Aguilar, Jean-Pierre; Berggren, William A.; Aubry, Marie-Pierre; Kent, Dennis V.; Clauzon, Georges; Benammi, Mouloud; Michaux, Jacques 2004 Articles PaleontologyGeology, Stratigraphic