ABSTRACT
The basic governing equations for elastic wave propagation in an anisotropic medium can be derived directly from the equations of motion for a continuum (in the absence of body forces) () ρ u ¨ i = σ i j , j https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9780203745663/77810aed-646c-4e0e-b927-bb49db307319/content/eq9.tif"/>
