1. S.S. Eaton, G.R. Eaton, L.J. Berliner, ed. by in Biological Magnetic Resonance, vol. 23 (Springer, Berlin, 2005)
2. A.J. Hoff, Advanced EPR—applications in biology and biochemistry (Elsevier, New York, 1989)
3. G. Hanson, L. Berliner, ed. by in Biological Magnetic Resonance, vol. 28 (Springer, Berlin, 2009)
4. R.G. Saifutdinov, L.I. Larina, T.I. Vakul’skaya, M.G. Voronkov, Electron paramagnetic resonance in biochemistry and medicine (Kluver Academic/Plenum Publishers, New York, 2001)
5. H.M. Swartz, S. Ambegaonkar, W. Antholine, M. Konieczny, C. Mailer, Ann. N. Y. Acad. Sci. 222, 989–1009 (1973)