1. Zhidomirov G.M., Lebedev Y.S., Dobrjakov S.N.: Interpretation of Complex EPR Spectra. Moscow: Nauka 1975.
2. Ovchinnikov I.V.: Dr. Sci. thesis, Kazan State University, Kazan 1980.
3. Konstantinov V.N., Ovchinnikov I.V., Domracheva N.E.: Zh. Strukt. Khim.25, 19–27 (1984)
4. Abragam A., Bleaney B.: Electron Paramagnetic Resonance of Transition Ions. Oxford: Clarendon Press 1970.
5. Studies in Interface Science;E.G. Boguslavsky,2001