1. Maouche, B., Alkama, R., and Feliachi, M., Semi analytical calculation of the impedance of a differential sensor for eddy current non-destructive testing, NDT & E Int., 2009, vol. 42, no. 7, pp. 573–580.
2. Huang, P., Wu, Z., Zheng, J., et al., Inversion algorithms for multi-layered thickness measurement in eddy current testing, Chin. J. Sci. Instrum., 2005, vol. 4, pp. 428–432.
3. Xu, X., Liu, M., Zhang, Z., et al., A novel high sensitivity sensor for remote field eddy current non-destructive testing based on orthogonal magnetic field, Sensors, 2014, vol. 14, no. 12, pp.24098–24115.
4. Marchand, B., Vacher, F., Gillespascaud, C., et al., High Resolution Eddy Current Probes for Non Destructive Testing. 2008, AIP Conf. Proc., vol. 975, no. 1, pp. 313–320.
5. Hu, S.W., Hu, X., and Lu, J., Study on eddy current principle-based nondestructive testing method for broken wire of PCCP, Water Resourc. &
Hydropower Eng., 2016, vol. 47, no. 2, pp. 101–114.