1. Ahmed, S.R., Saka, M.: A sensitive ultrasonic approach to NDE of tightly closed small cracks. J. Press. Vessel Technol. 120, 384–392 (1998)
2. Becker, F.L., Doctor, S.R., Heasler, P.G., Morris, C.J., Pitman, S.G., Selby, G.P., Simonen, F.A.: Integration of NDE reliability and fracture mechanics—Phase I report. NUREG/CR-1696 PNL-3469, vol. 1, 170 p. (1981)
3. Crutzen, S.J., Jehenson, P., Nichols, R.W., McDonald, N.: The major results of the PISC II RRT. Nucl. Eng. Des. 115, 7–21 (1989)
4. Crutzen, S., Lemaitre, P., Iacono, I.: Realistic defects suitable for ISI capability evaluation and qualification. In: Proceedings of the 14th International Conference on NDE in the Nuclear and Pressure Vessel Industries, 24–26 September 1996, Stockholm, Sweden, pp. 153–163 (1996)
5. Denby, D., Duncumb, A.C.: The effects of stress on the ultrasonic detectability of defects. In: Proceedings of the Conference of Nondestructive Testing in the Fitness-for-Purpose Assessment of Welded Constructions, pp. 73–81. The Weldiung Institute, Cambridge (1984)