1. G. A. Lawrance, Introduction to Coordination Chemistry (Wiley, Chichester, 2010).
2. Y. Jean, Molecular Orbitals of Transition Metal Complexes (Oxford Univ. Press, Oxford, 2005).
3. J. Ribas, Coordination Chemistry (Wiley-VCH, Weinheim, 2008).
4. C. J. Ballhausen, Introduction to Ligand Field Theory (McGraw-Hill, New York, 1962).
5. B. N. Figgis and M. A. Hitchman, Ligand Field Theory and its Application (Wiley-VCH, Weinheim, 2000).