DOI:https://doi.org/10.1103/PhysRevLett.6.624
©1961 American Physical Society
D. Stonehill, C. Baltay, H. Courant, W. Fickinger, E. C. Fowler, H. Kraybill, J. Sandweiss, J. Sanford*, and H. Taft
Vol. 6, Iss. 11 — 1 June 1961
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