1. Aki K. and Richards P., 1980. Quantitative Seismology. Theory and Methods. Freeman, San Francisco.
2. Borcherdt R.D., 1977. Reflection and refraction of type-II S waves in elastic and anelastic media. Bull. Seismol. Soc. Amer., 67, 43–67.
3. Borcherdt R.D., 1982. Reflection-refraction of general P-and type-I S waves in elastic and anelastic solids. Geophys. J. R. Astr. Soc., 70, 621–638.
4. Carcione J.M., 2001. Wave Fields in Real Media: Wave Propagation in Anisotropic, Anelastic and Porous Media. Pergamon, Amsterdam.
5. Caviglia G. and Morro A., 1992. Inhomogeneous Waves in Solids And Fluids. World Scientific, Singapore.