1. Lord Rayleigh, On waves propagated along the plane surface of an elastic solid.Proc. Lond. math. Soc. 17 (1885) 4?11.
2. Bullen, K. E.,An Introduction to the Theory of Seismology. Cambridge University Press, 1947, pp. 85?90.
3. Jeffreys, H.,The Earth, 3rd edn. Cambridge University Press, 1952, pp. 34?36
4. Kolsky, H.,Stress Waves in Solids. Dover, New York etc. 1963, pp. 16?24
5. Pearson, C. E.,Theoretical Elasticity, Harvard University Press, Cambridge Mass. 1959, pp. 190?192