1. Jiles, D.C.: Introduction to Magnetism and Magnetic Materials, 2nd edn. CRC Press/Wiley, Boca Raton (1998)
2. Cullity, B.D., Graham, C.D.: Introduction to Magnetic Materials, 2nd edn. IEEE Press, Hoboken (2009)
3. Bowler, J.R., Harfield, N.: Evaluation of probe impedance due to thin-skin eddy-current interaction with surface cracks. IEEE T. Magn. 34, 515–523 (1998)
4. Kaye, G.W.C., Laby, T.H.: Tables of Physical and Chemical Constants, 15th edn. Longman, London (1986)
5. Kinser, E.R.: Magnetic nondestructive characterization of case depth in surface-hardened steel. M.S. thesis, Iowa State University (2005)