DOI:https://doi.org/10.1103/PhysRevLett.4.399
©1960 American Physical Society
C. W. Sherwin, H. Frauenfelder, E. L. Garwin, E. Lüscher, S. Margulies, and R. N. Peacock
Vol. 4, Iss. 8 — 15 April 1960
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