2CHEN Xiaofei. A systematic and efficient method of computing normal modes for muhilayered half-space [ J]. Geophys J Int, 1993,115:391 - 409.
3HASKELL N A. The dispersion of surface waves on muhilayered media [J ]. Bull Seism Soc Am, 1953, 43:17 -34.
4KNOPOFF L. A matrix method for elastic wave problems [J]. Bull Seism Soc Am, 1964, 54:431 -438.
5ABO-ZENA A. Dispersion function computations for unlimited frequency values [ J ]. Geophys J R Astr Soc, 1979, 58:91 - 105.
6MENKE W. Comment on ‘Dispersion function computa- tions for unlimited frequency values' by anas abo-zena [J]. Geophys J R Astr Soc, 1979, 95:315 -323.
7KENNETT B L N. Reflection rays and reverberations [J]. Bull Seism Soc Am, 1974, 64:1685-1696.
8KENNETT B L N, KERRY N J. Seismic waves in a stratified halfspace [J]. Geophys J R Astr Soc, 1979, 57:557 - 583.