1. W. M. Ewing, W. S. Jardetzky, and F. Press, Elastic Waves in Layered Media, McGraw–Hill, New York (1957).
2. L. M. Brekhovskikh, Waves in Layered Media, Academic Press, New York (1976).
3. M. A. Isakovich, General Acoustics [in Russian], Nauka, Moscow (1973).
4. R. Stoneley, Proc. Roy. Soc. Lond., A106, No. 732, 416 (1924).
5. K. Aki and P. G. Richards, Quantitative Seismology, University Science Books, Sausalito, CA (2009).