1. Propagation of a pulse in a fluid sphere;Alterman;Geophysics,1964
2. Propagation of an SH-torque pulse in a sphere;Alterman;Rev. Geophys.,1965
3. Reflection of a pulse by a spherical surface;Anderson;J. Acoust. Soc. Am.,1952
4. Sur la profondeur du foyer d'un tremblement de terre déduite d'un sismogramme d'une station éloignée;Berlage;Publ. Bur. Central Séismol. Intern., A, Trav. Sci., Fase,1924
5. Features of the travel-time curves of seismic rays;Bullen;Monthly Notices Roy. Astron. Soc., Geophys.,1945