1. A. Abragam “The Principles of Nuclear Magnetism” Oxford University Press, London, 1978, Chapter 8.
2. C.J. Jameson in “Multinuclear NMR”, J. Mason (Ed.), Plenum Press, New York, 1987, Chapter 4.
3. R.K. Harris “Nuclear Magnetic Resonance Spectroscopy”, Longman, Harlow, 1986.
4. J.W. Emsley, J. Feeney and L.H. Sutcliffe, “High Resolution Nuclear Magnetic Resonance Spectroscopy”, Pergamon Press, London, 1965, Chapter 8.
5. S. Carr, R. Colton and D. Dakternieks, J. Magn. Reson., 47, 156 (1982).