Baker, E. W.; Palmer, S. E.; Parrish, K. L. (1976): Tetrapyrrole pigments in DSDP Leg 38 sediments. Texas A & M University, Ocean Drilling Program, College Station, TX, United States, Initial Reports of the Deep Sea Drilling Project, 38 (Dublin, Ireland to Amsterdam, The Netherlands; Aug.-Sept.1974), 785-789, georefid:1977-019178