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\bibitem{Dachraoui_etal2011} {\textquotedblleft}\textit{Short-range layered A-site ordering in double perovskites NaLaBB{\textquoteright}O$_{6}$ (B = Mn, Fe, B{\textquoteright} = Nb, Ta)}{\textquotedblright}. Dachraoui W, Yang T, Liu C, Ling G, Hadermann J, Van Tendeloo G, Llobet A, Greenblatt M, Chemistry of materials \textbf{23}, 2398 (2011).   http://doi.org/10.1021/cm200226u

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