1. Monchalin, J-P., Aussel, J-D., Bouchard, P., Heon, R. Review of Progress in Quantitative NDE,Vol. 7A,edited by D.O.Thompson and D.E.Chimenti (Plenum Press,New York,1988) pl607
2. McKie, A.D.W., Addison, R.C., Review of Progress in Quantitative NDE,Vol. 11A,OP. cit.. p577 (1992)
3. Castagnede, B., Sachse, W., Thompson, M.O., Proc. Ultrasonics International 89, (Butterworth- Heinemann,London, 1990 ), p71
4. Rose, J.L., Pilarski, A., Balasubramaniam, K., Tverdokhlebov, A., Ditri, J., New Directions in NDE of Advanced Materials,edited by J.L.Rose and A.A.Tseng (ASME, 1988 ), p63
5. Scudder, L.P., Hutchins, D.A., Proc. Ultrasonics International 91, (Butterworth-Heinemann,London, 1992 ) p575