1. E. Thelen, The ramac 350 resoration web site. http://www.ed-thelen.org
2. J. Stöhr, H.C. Siegmann, Magnetism: from Fundamentals to Nanoscale Dynamics (Springer, Berlin, 2006)
3. M. Faraday, Phil. Trans. R. Soc. 136, 1 (1846)
4. J. Kerr, Phil. Mag. 3, 321 (1877)
5. A. Hubert, R. Schäfer, Magnetic Domains (Springer, Berlin, 1998)