1. Ray Methods For Waves in Elastic Solids (with application to scattering by cracks);Achenbach,1985
2. The Space-time Ray Method. Linear and Non-linear Waves;Babich,1985
3. Wave Propagation in Elastic Solids;Achenbach,1973
4. Dynamic Mixed Problems of Elasticity for Non-classical Domains;Vorovich,1974
5. Energy vortices and backward fluxes in elastic waveguides;Babeshko;Wave Motion,1992