1. Zamaraev, К.I., Molin, Y.N., Salikhov, К.М.: Spin exchange, p. 317. Nauka, Sibirian branch, Novosibirsk (1977)
2. Мolin, Y.N., Salikhov, K.M., Zamaraev, K.I.: Spin exchange. Principles and applications in chemistry and biology. Springer-Verlag, Berlin/Heidelberg/New York (1980)
3. Bales, B.L.: Inhomogeneously broadened spin-label spectra. In: Berliner, L.J., Reuben, J. (eds.) Biological magnetic resonance, vol. 8, pp. 77–130. Plenum Publishing Corporation, New York (1989)
4. Salikhov, K.M.: Contributions of exchange and dipole–dipole interactions to the shape of EPR spectra of free radicals in diluted solutions. Appl. Magn. Reson. 38, 237–256 (2010)
5. Bales, B.L., Peric, M.: EPR line shifts and line shape changes due to spin exchange of nitroxide free radicals in liquids. J. Phys. Chem. B. 101, 8707–8716 (1997)