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\bibitem{Sahin_etal2013} {\textquotedblleft}\textit{Anomalous Raman spectra and thickness-dependent electronic properties of WSe$_{2}$}{\textquotedblright}. Sahin H, Tongay S, Horzum S, Fan W, Zhou J, Li J, Wu J, Peeters FM, Physical review : B : condensed matter and materials physics \textbf{87}, 165409 (2013).   http://doi.org/10.1103/PhysRevB.87.165409

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