1. World seismicity maps compiled from ESSA, Coast and Geodetic Survey, epicenter data, 1961–1967;Barazangi;J. Seis. Soc. Am.,1969
2. Computation of the main geomagnetic field from spherical harmonic expansions;Cain,1964
3. Geomagnetic polarity epochs;Cox;Science,1963
4. Continent and ocean basin evolution by spreading of the sea floor;Dietz;Nature,1961
5. Some problems of Antarctic submarine geology;Ewing,1956