1. Pilbrow JR (1990) Transition ion electron paramagnetic resonance. Clarendon, Oxford
2. Mabbs FE, Collison DC (1992) Electron paramagnetic resonance of transition metal compounds. Elsevier, Amsterdam
3. Basosi R, Antholine WE, Hyde JS (1993) Multifrequency ESR of copper biophysical applications. In: Berliner LJ, Reuben J (eds) Biological magnetic resonance, vol 13. Plenum Press, New York
4. Moebius K, Savitsky A (2008) High field EPR spectroscopy of proteins and their model systems: characterization of transient paramagnetic states. Royal Society of Chemistry, Cambridge
5. Misra S (2011) Multifrequency electron paramagnetic resonance: theory and applications. Wiley-VCH, Weinheim