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\bibitem{Nistor_etal1994} {\textquotedblleft}\textit{Ordering and defects in Ba$_{n}$Ta$_{x}$Ti$_{y}$O$_{3n}$ ternary oxides}{\textquotedblright}. Nistor L, Van Tendeloo G, Amelinckx S, Shpanchenko RV, van Landuyt J, Electron Microscopy 1994, Vols 2a And 2b: Applications In Materials Sciences , 869 (1994)

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