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\bibitem{Wang_etal2019} {\textquotedblleft}\textit{T$_{4,4,4}$-graphyne : a 2D carbon allotrope with an intrinsic direct bandgap}{\textquotedblright}. Wang W, Li L, Kong X, Van Duppen B, Peeters FM, Solid state communications \textbf{293}, 23 (2019).   http://doi.org/10.1016/J.SSC.2019.02.001

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