DOI:https://doi.org/10.1103/PhysRevLett.68.2565
©1992 American Physical Society
B. Sur, E. B. Norman, F. E. Wietfeldt, K. T. Lesko, M. M. Hindi, R. M. Larimer, P. N. Luke, W. L. Hansen, and E. E. Haller
Vol. 68, Iss. 16 — 20 April 1992
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