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\bibitem{Parsons_etal2009} {\textquotedblleft}\textit{Synthesis and structural characterization of La$_{1-x}$A$_{x}$MnO$_{2.5}$ (A = Ba, Sr, Ca) phases: mapping the variants of the brownmillerite structure}{\textquotedblright}. Parsons TG, d{\textquoteright} Hondt H, Hadermann J, Hayward MA, Chemistry of materials \textbf{21}, 5527 (2009).   http://doi.org/10.1021/cm902535m

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