1. Stress Wave Propagation in Solids;Wasley,1973
2. Lehrbuch der Kristallphysik;Voigt,1910
3. The Elastic Constants of Anisotropic Materials;Hearmon;Rev. Modern Physics,1946
4. The Elastic Constants of Anisotropic Materials II;Hearmon;Phil. Mag. Suppl.,1956
5. An Introduction to Applied Anisotropic Elasticity;Hearmon,1961