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\bibitem{Gillie_etal2003} {\textquotedblleft}\textit{Synthesis and characterization of the reduced double-layer manganite Sr$_{3}$Mn$_{2}$O$_{6+x}$}{\textquotedblright}. Gillie LJ, Wright AJ, Hadermann J, Van Tendeloo G, Greaves C, Journal of solid state chemistry \textbf{175}, 188 (2003).   http://doi.org/10.1016/S0022-4596(03)00245-7

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