Aquitanium: Verskil tussen weergawes

* {{en}} Steininger, F.F.; Aubry, M.P.; Berggren, W.A.; Biolzi, M.; Borsetti, A.M.; Cartlidge, J.E.; Cati, F.; Corfield, R.; Gelati, R.; Iaccarino, S.; Napoleone, C.; Ottner, F.; Rogl, F.; Roetzel, R.; Spezzaferri, S.; Tateo, F.; Villa, G. & Zevenboom, D.; '''1997''': ''The Global Stratotype Section and Point (GSSP) for the base of the Neogene'', Episodes '''20(1)''', p. 23-28.