Newmark, Robin L.; Anderson, Roger N.; Moos, Daniel; Zoback, Mark D. (1985): Sonic and ultrasonic logging of Hole 504B and its implications for the structure, porosity, and stress regime of the upper 1 km of the oceanic crust. Texas A & M University, Ocean Drilling Program, College Station, TX, United States, In: Anderson, Roger N., Honnorez, Jose, Adamson, Andrew C., Alt, Jeffrey C., Emmermann, Rolf, Kempton, Pamela D., Kinoshita, Hajimu, Leverne, Christine, Mottl, Michael J., Newmark, Robin L., Becker, Keir, Initial reports of the Deep Sea Drilling Project, covering Leg 83 of the cruises of the Drilling Vessel Glomar Challenger, Balboa, Panama to Balboa, Panama, November 1981- January 1982, 83, 479-510, georefid:1985-059465