1. R. D. Adams andM. J. Randall,The fine structure of the Earth’s core, Bull. Seism. Soc. Am.54 (1964), 1299.
2. M. Båth,Methods to improve seismograph data, Scientia102 (1967), 304 (English), 146 (French).
3. M. Båth andA. Lopez Arroyo,Pa and Sa waves and the upper mantle, Geofisica Pura e Appl.56 (1963), 67.
4. B. A. Bolt,The velocity of seismic waves near the Earth’s center, Bull. Seism. Soc. Am.54 (1964), 191.
5. B. A. Bolt,Estimation of PKP travel times, Bull. Seism. Soc. Am.58 (1968), 1305.