1. L.W. Schmerr, Fundamentals of Ultrasonic Phased Arrays (Springer, New York, 2014)
2. R. Huang, L.W. Schmerr, A. Sedov, T.A. Gray, Kirchhoff approximation revisited—some new results for scattering in isotropic and anisotropic elastic solids. Res. NDE 17, 137–160 (2006)
3. R. Huang, L.W. Schmerr, A. Sedov, A modified Born approximation for scattering in isotropic and anisotropic elastic solids. J. NDE 25, 139–154 (2006)
4. T.H. Tan, Reciprocity relations for scattering of plane, elastic waves. J. Acoust. Soc. Am. 61, 928–931 (1977)
5. G.S. Kino, Acoustic Waves: Devices, Imaging, and Analog Signal Processing (Prentice-Hall, Englewood Cliffs, 1987)