Backman, Jan; Morton, Andrew C.; Roberts, David G.; Brown, S.; Krumsiek, Klaus A. O.; Macintyre, R. M. (1984): Geochronology of the lower Eocene and upper Paleocene sequences of Leg 81. Texas A & M University, Ocean Drilling Program, College Station, TX, United States, In: Roberts, David G., Schnitker, Detmar, Baldauf, Jack G., Desprairies, Alain, Homrighausen, Reiner, Huddlestun, Paul F., Kaltenback, Alfred J., Krumsiek, Klaus A. O., Morton, Andrew C., Murray, John W., Westberg-Smith, M. Jean, Zimmerman, Herman B., Keene, John B., Backman, Jan (editor), Initial reports of the Deep Sea Drilling Project covering Leg 81 of the cruises of the drilling vessel Glomar Challenger; Southampton, United Kingdom, to Ponta Delgada, Azores Islands, July-September, 1981, 81, 877-882, georefid:1985-047634