1. Elastic Waves in Layered Media;Ewing,1957
2. Waves in Layered Media;Brekhovskikh,1976
3. An Introduction to the Theory of Seismology;Bullen,1985
4. Waves and Fields in Inhomogeneous Media;Chew,1990
5. A new method to obtain 3-D Green's functions for anisotropic solids;Wang;Wave Motion,1993