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\bibitem{Sarmadian_etal2016} {\textquotedblleft}\textit{First-principles study of the optoelectronic properties and photovoltaic absorber layer efficiency of Cu-based chalcogenides}{\textquotedblright}. Sarmadian N, Saniz R, Partoens B, Lamoen D, Journal of applied physics \textbf{120}, 085707 (2016).   http://doi.org/10.1063/1.4961562

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