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\bibitem{Chernov_etal2012} {\textquotedblleft}\textit{_Sr\{2\}GaScO$_{5}$, Sr$_{10}$Ga$_{6}$Sc$_{4}$O$_{25}$, and SrGa$_{0.75}$Sc$_{0.25}$O$_{2.5}$ : a play in the octahedra to tetrahedra ratio in oxygen-deficient perovskites}{\textquotedblright}.  Chernov SV, Dobrovolsky YA, Istomin SY, Antipov EV, Grins J, Svensson G, Tarakina NV, Abakumov AM, Van Tendeloo G, Eriksson SG, Rahman SMH;, Inorganic chemistry \textbf{51}, 1094 (2012).   http://doi.org/10.1021/ic202236h

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