1. Abragam, A., 1955, Phys. Rev. 98:1729.
2. Abragam, A., 1961–78, The Principles of Nuclear Magnetism ,Oxford UP, Oxford.
3. Abragam, A., and Bleaney, B., 1970, Electron Paramagnetic Resonance of Transition Metal Ions, Clarendon Press, Oxford.
4. Abragam, A., and Pound, R. V., 1953, Phys. Rev. 92:953.
5. Al’tshuler, S. A., and Kozyrev, B. M. ,1964, Electron Paramagnetic Resonance ,Academic Press, New York.