DOI:https://doi.org/10.1103/PhysRevLett.20.274
©1968 American Physical Society
D. D. Drobnis, J. Lales, R. C. Lamb, R. A. Lundy, A. Moretti, R. C. Niemann, T. B. Novey, J. Simanton, A. Yokosawa, and D. D. Yovanovitch
Vol. 20, Iss. 6 — 5 February 1968
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