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\bibitem{Houssa_etal2013} {\textquotedblleft}\textit{An electric field tunable energy band gap at silicene/(0001) ZnS interfaces}{\textquotedblright}. Houssa M, van den Broek B, Scalise E, Pourtois G, Afanas{\textquoteright}ev VV, Stesmans A, Physical chemistry, chemical physics \textbf{15}, 3702 (2013).   http://doi.org/10.1039/c3cp50391g

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