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\bibitem{Abakumov_etal2004} {\textquotedblleft}\textit{Synthesis and crystal structure of the novel Pb5Sb2MnO11 compound}{\textquotedblright}. Abakumov AM, Rozova MG, Chizhov PS, Antipov EV, Hadermann J, Van Tendeloo G, Journal of solid state chemistry \textbf{177}, 2855 (2004).   http://doi.org/10.1016/j.jssc.2004.04.047

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