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\bibitem{Sahin_etal2016} {\textquotedblleft}\textit{Computing optical properties of ultra-thin crystals}{\textquotedblright}. Sahin H, Torun E, Bacaksiz C, Horzum S, Kang J, Senger RT, Peeters FM, Wiley Interdisciplinary Reviews: Computational Molecular Science \textbf{6}, 351 (2016).   http://doi.org/10.1002/wcms.1252

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