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\bibitem{Fang_etal2010} {\textquotedblleft}\textit{Origin of predominance of cementite among iron carbides in steel at elevated temperature}{\textquotedblright}. Fang CM, Sluiter MHF, van Huis M, Ande CK, Zandbergen HW, Physical review letters \textbf{105}, 4 (2010).   http://doi.org/10.1103/PhysRevLett.105.055503

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