Investigations of the Earth's Crust: Paris, March 1962
International Council of Scientific Unions. International Geophysical Committee. Working Group on the Upper Mantle Project
Working Group on the Upper Mantle Project Markus Båth, Vít Kárník. J. L. Worzel: Shear velocity measurements in the oceans. More shear waves have been found with the oceanic bottom seismographs than with the surface measurements.