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\bibitem{Abakumov_etal2008} {\textquotedblleft}\textit{Superspace description, crystal structures, and electric conductiof the Ba$_{4}$In$_{6-x}$Mg$_{x}$O$_{13-x}$/2 solid solutions}{\textquotedblright}. Abakumov AM, Rossell MD, Gutnikova OY, Drozhzhin OA, Leonova LS, Dobrovolsky YA, Istomin SY, Van Tendeloo G, Antipov EV, Chemistry of materials \textbf{20}, 4457 (2008).   http://doi.org/10.1021/cm8004216

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