DOI:https://doi.org/10.1103/PhysRevLett.11.436
©1963 American Physical Society
N. Gelfand, D. Miller, M. Nussbaum, J. Ratau, J. Schultz, J. Steinberger, and T. -H. Tan
L. Kirsch and R. Plano
Vol. 11, Iss. 9 — 1 November 1963
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