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\bibitem{Bals_etal2012} {\textquotedblleft}\textit{Atomic scale dynamics of ultrasmall germanium clusters}{\textquotedblright}. Bals S, Van Aert S, Romero CP, Lauwaet K, Van Bael MJ, Schoeters B, Partoens B, Yuecelen E, Lievens P, Van Tendeloo G, Nature communications \textbf{3}, 897 (2012).   http://doi.org/10.1038/ncomms1887

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