Science (New York, N.Y.) (2008) - Comment
pubmed: 18369150  doi: 10.1126/science.1154330  issn: 1095-9203  issn: 0036-8075 

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Sergiy Sylantyev, Leonid P. Savtchenko, Yin-Ping Niu, Anton I. Ivanov, Thomas P. Jensen, Dimitri M. Kullmann, Min-Yi Xiao, Dmitri A. Rusakov