1. L.J.H. Brasche and O. Buck, in: Review of Progress in Quantitative NDE, edited by D.O.Thompsonand D.E.Chimenti, vol. 11 (AIP, Melville, 1991) pp. 1701–1706.
2. J.L. Bartos, D.C. Copley, R.S. Gilmore, and P.J. Howard, Titanium ’95: Science and Technology, vol. 2, 1996, pp. 1513–1520.
3. J. H. Hinken and Y. Tavrin, in Review of Progress in Quantitative Nondestructive Evaluation, edited by D. O. Thompson and D. E. Chimenti, Vol. 19 (AIP, Melville, 2000) pp. 2085–2092.
4. H. Carreon, P.B. Nagy, and A.H. Nayfeh, J. Appl. Phys. 88, 6495 (2000).
5. H. Carreon, NDT. & E International 39, 22 (2006).