DOI:https://doi.org/10.1103/PhysRevLett.19.330
©1967 American Physical Society
K. J. Foley, R. S. Jones, S. J. Lindenbaum, W. A. Love, S. Ozaki, E. D. Platner, C. A. Quarles, and E. H. Willen
Vol. 19, Iss. 6 — 7 August 1967
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