Burckle, L. H. (1979): Validation of middle Pliocene to Pleistocene paleomagnetic reversal record using diatom and silicoflagellate datum levels. Texas A & M University, Ocean Drilling Program, College Station, TX, United States, In: von Rad, U. (editor), Ryan, W. B. F. (editor), Arthur, M. A. (editor), Cepek, P. (editor), Cita, M. B. (editor), Cornford, C. (editor), Garifal, L. (editor), Hamilton, N. (editor), Lopatin, B. (editor), Lutze, G. F. (editor), McCoy, F. W. (editor), Mountain, G. (editor), Sarnthein, M. (editor), Weser, O. E. (editor), Whelan, J. K. (editor), Wind, F. H. (editor), Laughter, F. H. (editor), Fagerberg, E. M. (editor), Leg 47, Part 1 of the cruises of the drilling vessel Glomar Challenger; Las Palmas, Canary Islands to Vigo, Spain, March-April, 1976, 47, Part 1, 479-481, georefid:1980-054293