Doerenkamp, A.; Robert, P. (1979): Optical study of organic matter from some samples of Cretaceous age, Leg 47B, Hole 398D. Texas A & M University, Ocean Drilling Program, College Station, TX, United States, In: Laughter, F. H. (editor), Fagerberg, E. M. (editor), Sibuet, J. C., Ryan, W. B. F., Arthur, M. A., Barnes, R. O., Habib, D., Iaccarino, S., Johnson, D., Lopatin, B., Maldonado, A., Moore, D. G., Morgan, G. E., Rehault, J. P., Sigal, J., Williams, C. A., Leg 47, Part 2 of the cruises of the drilling vessel Glomar Challenger, Vigo, Spain to Brest, France; April-May 1976, 47, Part 2, 529-531, georefid:1980-017123