1. The resolving power of gross Earth data;Backus;Geophys. J. R. astr. Soc.,1968
2. The normal modes of a rotating, elliptical Earth;Dahlen;Geophys. J. R. astr. Soc.,1968
3. Geophys. J. R. astr. Soc. 18 397 436
4. Free oscillation observations through 1968;Derr;Bull. seism. Soc. Am.,1969
5. On regional difference in dispersion of mantle Rayleigh waves;Dziewonski;Geophys. J. R. astr. Soc.,1970