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\bibitem{Grujic_etal2016} {\textquotedblleft}\textit{Tunable skewed edges in puckered structures}{\textquotedblright}. Gruji{\'c} MM, Ezawa M, Tadic MZ, Peeters FM, Physical review B \textbf{93}, 245413 (2016).   http://doi.org/10.1103/PhysRevB.93.245413

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