DOI:https://doi.org/10.1103/PhysRevLett.19.1393
©1967 American Physical Society
R. J. Cence, V. Z. Peterson, and V. J. Stenger
C. B. Chiu, R. D. Eandi, A. C. Helmholz, R. W. Kenney, B. J. Moyer, J. A. Poirier*, and W. B. Richards†
Vol. 19, Iss. 24 — 11 December 1967
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