DOI:https://doi.org/10.1103/PhysRevLett.8.275
©1962 American Physical Society
F. J. Morin, J. P. Maita, H. J. Williams, R. C. Sherwood, J. H. Wernick, and J. E. Kunzler
Vol. 8, Iss. 7 — 1 April 1962
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