1. A. Abragam and B. Bleaney (1970) Electron Paramagnetic Resonance of Transition Ions, Oxford University Press, London.
2. W. Weltner, Jr. (1983) Magnetic A toms and Molecules, Dover, New York.
3. J.A. Weil, J.R. Bolton, and J.E. Wertz (1996) Electron Paramagnetic Resonance: Elemental Theory and Practical Applications, Wiley, New York.
4. D.L. Griscom (1990) Rev. Solid State Science
4, 565.
5. M. Cook and C.T. White (1989) Surf. Sci. Technol.
4, 1012