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\bibitem{Milat_etal1995} {\textquotedblleft}\textit{Effect of the substitution Ba\leftrightarrow Sr on the Ga-1222 superstructure : an electron diffraction study}{\textquotedblright}. Milat O, Van Tendeloo G, Amelinckx S, Wright AJ, Greaves C, Chemistry of materials \textbf{7}, 1709 (1995).   http://doi.org/10.1021/cm00057a021

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