1. The analysis of sparse data in APCD crack growth monitoring;Lugg;NDT International,1988
2. The use of AC field measurements for non-destructive testing;Collins,1985
3. The AC field around a plane semi-elliptical crack in a metal surface;Collins,1981
4. The influence of skin depth on crack measurement by the AC fiedl technique;Mirshekar-Syahkal;J Nondestructive Eval,1982
5. Thick-skin modelling for surface-breaking cracks;Michael,1988