Bonatti, E.; Hartman, K.; Innocenti, F.; Kay, R. (1977): Basalt drilled at the Vema fracture zone, DSDP Leg 39. Texas A & M University, Ocean Drilling Program, College Station, TX, United States, Initial Reports of the Deep Sea Drilling Project, 39 (Amsterdam, Neth. to Cape Town, S. Afr., Oct.-Dec. 1974), 507-511, georefid:1978-003285