1. M. Mehring, High Resolution NMR Spectroscopy in Solids (Springer, Heidelberg, 1976).
2. E. R. Andrew, in Progress in NMR Spectroscopy, edited by J. W. Emsley, J. Feeney, and L. H. Sutcliffe (Pergamon, Oxford, 1972), Vol. 8.
3. A. Pines, M. G. Gibby, and J. S. Waugh, J. Chem. Phys. 59, 569 (1973).JCPSA60021-9606
4. J. Schaefer and E. O. Stejskal, J. Am. Chem. Soc. 98, 1031 (1976).JACSAT0002-7863
5. D. A. McArthur, E. L. Hahn, and R. E. Walstedt, Phys. Rev. 188, 609 (1969).PHRVAO0031-899X