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Wang F, Zhang Y, Tian C, Girit C, Zettl A, Crommie M, Shen YR.Wang F, et al. Among authors: tian c.Science. 2008 Apr 11;320(5873):206-9. doi: 10.1126/science.1152793. Epub 2008 Mar 13.Science. 2008.PMID: 18339901
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