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\bibitem{Antipov_etal2004} {\textquotedblleft}\textit{Oxygen and fluorine doping in Sr$_{2}$MnGaO$_{5}$ brownmillerite}{\textquotedblright}. Antipov EV, Abakumov AM, Alekseeva AM, Rozova MG, Hadermann J, Lebedev OI, Van Tendeloo G, Physica status solidi: A: applied research \textbf{201}, 1403 (2004).   http://doi.org/10.1002/pssa.200304428

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