Reference
Fritz F. Steininger, Godfrid Wessely (1999): From the Tethyan Ocean to the Paratethys Sea: Oligocene to Neogene Stratigraphy, Paleogeography and Paleobiogeography of the circum-Mediterranean region and the Oligocene to Neogene Basin evolution in Austria. – Austrian Journal of Earth Sciences – 92: 95 - 116.