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\bibitem{Volkova_etal2014} {\textquotedblleft}\textit{Nanoscale ordering in oxygen deficient quintuple perovskite Sm$_{2-\epsilon}$Ba$_{3+\epsilon}$Fe$_{5}$O$_{15-\delta}$ : implication for magnetism and oxygen stoichiometry}{\textquotedblright}. Volkova NE, Lebedev OI, Gavrilova LY, Turner S, Gauquelin N, Seikh MM, Caignaert V, Cherepanov VA, Raveau B, Van Tendeloo G, Chemistry of materials \textbf{26}, 6303 (2014).   http://doi.org/10.1021/cm503276p

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