DOI:https://doi.org/10.1103/PhysRevLett.19.1482
©1967 American Physical Society
J. J. Schwartz, D. Cline, and H. E. Gove
R. Sherr and T. S. Bhatia
R. H. Siemssen*
Vol. 19, Iss. 26 — 25 December 1967
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