Christensen, N. I.; Carlson, R. L.; Salisbury, M. H.; Fountain, D. M. (1975): Elastic wave velocities in volcanic and plutonic rocks recovered on DSDP Leg 31. Texas A & M University, Ocean Drilling Program, College Station, TX, United States, Initial Reports of the Deep Sea Drilling Project, 31 (Apra, Guam to Hakodate, Japan; June-August 1973), 607-609, georefid:1976-018641