1. Earthquakes and rock creep;Benioff;Bull. Seis. Soc. Amer.,1951
2. Elastic constants of the Earth's mantle;Bullen;Trans. R. Soc. New Zealand,1940
3. Bullen, K. E., , Introduction to the theory of seismology, Cambridge University Press, 1947,
4. Plastic flow and deformation within the Earth;Colloquium;Trans. Amer. Geophys. Union,1951
5. Gutenberg, B., , C. F., Richter, , Seismicity of the Earth and associated phenomena, Princeton University Press, 1949,