1. R.S. Alger, Electron Paramagnetic Resonance: Techniques and Application (Wiley, New York, 1968)
2. J.A. Weil, J.R. Bolton, Electron Paramagnetic Resonance: Elementary Theory and Practical Applications, 2nd edn. (Wiley, New York, 2007)
3. S.K. Misra, J. Sun, Phys. Rev. B 42, 8601–8604 (1990)
4. S. Deepa, K. Velavan, I. Sougandi, R. Venkatesan, P.S. Rao, Spectrochim. Acta A 61, 2482–2487 (2005)
5. S.K. Misra, C. Wang, Physica B 160, 129–137 (1989)