Author	William Wing
Year of Publication	1980
Date Published	Jan-08-1980
Journal Title	Physical Review Letters
Volume	45
Start Page or Article ID (correct)	631-634
ISSN Number	0031-9007
DOI	10.1103/PhysRevLett.45.631
URL	http://link.aps.org/doi/10.1103/PhysRevLett.45.631
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	Journal Article
Publication Status	Published