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\bibitem{Torun_etal2018} {\textquotedblleft}\textit{Ab initio and semiempirical modeling of excitons and trions in monolayer TiS3}{\textquotedblright}. Torun E, Sahin H, Chaves A, Wirtz L, Peeters FM, Physical review B \textbf{98}, 075419 (2018).   http://doi.org/10.1103/PHYSREVB.98.075419

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