Driever, B. W. M. (1984): The terminal record of Discoaster in the Mediterranean and in the Atlantic DSDP Site 397, and the Pliocene-Pleistocene boundary. North-Holland, Amsterdam-Oxford-New York, Netherlands, Proceedings of the Koninklijke Nederlandse Akademie van Wetenschappen, Series B: Palaeontology, Geology, Physics and Chemistry, 87 (1), 77-102, georefid:1985-007515