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\bibitem{Aierken_etal2016} {\textquotedblleft}\textit{A first-principles study of stable few-layer penta-silicene}{\textquotedblright}. Aierken Y, Leenaerts O, Peeters FM, Physical chemistry, chemical physics \textbf{18}, 18486 (2016).   http://doi.org/10.1039/c6cp03200a

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