Leslie, David; Anderson, Roger N.; Liu, Olive (1983): Comparison of sonic waveform spectra in the oceanic crust at DSDP Holes 556, 558 and 564 on the Mid-Atlantic Ridge and 504B on the Costa Rica Rift. American Geophysical Union, Washington, DC, United States, In: Anonymous, AGU 1983 fall meeting, 64 (45), 852, georefid:1986-086013