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\bibitem{Bafekry_etal2019} {\textquotedblleft}\textit{Band gap and magnetism engineering in Dirac half-metallic Na$_{2}$C nanosheet via layer thickness, strain and point defects}{\textquotedblright}. Bafekry A, Mortazavic B, Shayesteh SF, Journal of magnetism and magnetic materials \textbf{491}, 165565 (2019).   http://doi.org/10.1016/J.JMMM.2019.165565

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