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\bibitem{vandenBroek_etal2014} {\textquotedblleft}\textit{Current-voltage characteristics of armchair Sn nanoribbons}{\textquotedblright}. van den Broek B, Houssa M, Pourtois G, Afanas{\textquoteright}ev VV, Stesmans A, Physica status solidi: rapid research letters \textbf{8}, 931 (2014).   http://doi.org/10.1002/pssr.201400073

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