1. J. T. Arnold and M. E. Packard, J. Chem. Phys. 19 (1951), 507.
2. J. A. Pople, W. G. Schneider, and H. J. Bernstein, High-resolution Nuclear Magnetic Resonance, McGraw-Hill, New York, 1959.
3. J. W. Emsley, J. Feeney, and L. H. Sutcliffe, High Resolution Nuclear Magnetic Resonance Spectroscopy, Pergamon, Oxford, 1965.
4. A. Abragam, The Principles of Nuclear Magnetism, Oxford University Press, Oxford, 1961.
5. J. W. Emsley, J. Feeney, and L. H. Sutcliffe, eds., Progress in Nuclear Magnetic Resonance Spectroscopy, Pergamon, Oxford, 1966, Vol. 1.