PageHeader : Funkcialaj Ekvacioj, 40 (1997) 57-77 Title : Scattering Theory for Elastic Wave Propagation Problems Title : in Perturbed Stratified Media $R^{3}$ AuthorInfo : By AuthorInfo : Senjo SHIMIZU AuthorInfo : (Shizuoka University, Japan) section : 1. Introduction and results section : 2. The limiting absorption principle for $A_{0}$ and $A$ section : 3. Proof of Main Theorem section : Appendix section : References