1. [1] Hagemaier, D.J., 1991, “Nondestructive testing developments in the aircraft industry”, Materials Evaluation, 49(12), pp. 1470-1478.
2. [2] Schmidt, H-J., Schmidt-Brandecker, B., Tober. G., 2000, “Design of modern aircraft structure and the role of NDI”, Insight, 42(3), pp. 141-147.
3. [3] Ball, D. L., 2003, “The Role of Nondestructive Testing in Aircraft Damage Tolerance”, Materials Evaluation, 61(7), pp. 814-818.
4. [4] Libby, H. L., 1971, Introduction to Electromagnetic Non-destructive Test Methods, New-york, etc: Wiley-Interscience.
5. [5] Udpa, S.S., More P.O., Eds, 2004, Nondestructive testing handbook (third edition), 5, Electromagnetic testing, American Society for NDT.