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\bibitem{Torun_etal2015} {\textquotedblleft}\textit{Stable half-metallic monolayers of FeCl$_{2}$}{\textquotedblright}. Torun E, Sahin H, Singh SK, Peeters FM, Applied physics letters \textbf{106}, 192404 (2015).   http://doi.org/10.1063/1.4921096

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