1. Schweiger A, Jeschke G (2001) Principles of Pulse Electron Paramagnetic Resonance. Oxford University Press, Oxford
2. Kahn O (1993) Molecular Magnetism. VCH Publishers, Weinheim
3. Blundell S (2001) Magnetism in Condensed Matter. Oxford University Press, New York
4. Jiles D (1998) Introduction to Magnetism and Magnetic Materials. CRC Press, Boca Raton, Florida
5. Praneeth VKK, Neese F, Lehnert N (2005) Inorg Chem 44:2570