“Variations in volcanic processes along the median valley of the Mid-Atlantic Ridge, 22 degrees 50'N to 23 degrees 40'N”, Duke University, Durham, N.C., 1987.
, “Variations in axial processes on the Mid-Atlantic Ridge: the median valley of the MARK area”, Marine Geophysical Researches, vol. 10, pp. 109–138, 1988.
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