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Bals S, Van Aert S, Van Tendeloo G, Avila-Brande D.Bals S, et al.Phys Rev Lett. 2006 Mar 10;96(9):096106. doi: 10.1103/PhysRevLett.96.096106. Epub 2006 Mar 10.Phys Rev Lett. 2006.PMID: 16606285