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\bibitem{Fang_etal2011} {\textquotedblleft}\textit{Stability and structures of the \epsilon-phases of iron nitrides and iron carbides from first principles}{\textquotedblright}. Fang CM, van Huis MA, Zandbergen HW, Scripta materialia \textbf{64}, 296 (2011).   http://doi.org/10.1016/j.scriptamat.2010.08.048

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