REFERENCES
1.
2.
3.
4.
5.
6.
7.
S.
Clough
, M.
Starr
and N. D.
McMillan
, Phys. Rev. Letters
25
, 839
(1970
).8.
K. P.
Wong
, J. D.
Noble
, M.
Bloom
and P.
Alexander
, J. Magnetic Resonance
1
, 55
(1969
).9.
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© 1972 The American Institute of Physics.
1972
The American Institute of Physics