Schaftenaar, Carl Howard; Carlson, R. L. (1984): Acoustic properties of calcareous claystones and clay-rich chalks, Deep Sea Drilling Project, Leg 79. Texas A & M University, Ocean Drilling Program, College Station, TX, United States, In: Hinz, Karl, Winterer, Edward L., Baumgartner, Peter O., Bradshaw, Martin J., Channell, James E. T., Jaffrezo, Michel, Jansa, Lubomir F., Leckie, R. Mark (editor), Moore, Johnnie N., Rullkoetter, Juergen, Schaftenaar, Carl Howard, Steiger, Torsten H., Vuchev, Vassil T., Wiegand, George E., Blakeslee, Jan H. (editor), Initial reports of the Deep Sea Drilling Project; Las Palmas, Grand Canary Island to Brest, France, July-December, 1979, 79, 853-854, georefid:1985-045573