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\bibitem{Lepoittevin_etal2008} {\textquotedblleft}\textit{Long-range ordering in the Bi$_{1-x}$Ae$_{x}$FeO$_{3-x/2}$ perovskites: Bi$_{1/3}$Sr$_{2/3}$FeO$_{2.67}$ and Bi$_{1/2}$Ca$_{1/2}$FeO$_{2.75}$}{\textquotedblright}. Lepoittevin C, Malo S, Barrier N, Nguyen N, Van Tendeloo G, Hervieu M, Journal of solid state chemistry \textbf{181}, 2601 (2008).   http://doi.org/10.1016/j.jssc.2008.04.047

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