1. C.P. Slichter, Principles of Magnetic Resonance ( Harper and Row, 1963)
2. A. Abragam, The Principles of Nuclear Magnetism (Clarendon Press, Oxford, 1961)
3. A. Abragam and B. Bleaney, Electronic paramagnetic Resonance of transition Ions (Clarendon Press, Oxford 1970)
4. M. Goldman, Spin Temperature and Nuclear Magnetic Resonance in Solids (Clarendon Press, Oxford, 1970)
5. J. Winter, Magnetic Resonance in Metals (Clarendon Press, Oxford, 1971)