DOI:https://doi.org/10.1103/PhysRevLett.60.2811.3
©1988 American Physical Society
H. Kim, W. Jin, S. Lee, P. Zhou, T. J. Pinnavaia, S. D. Mahanti, and S. A. Solin
Vol. 60, Iss. 26 — 27 June 1988
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