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\bibitem{Nikolaichik_etal2002} {\textquotedblleft}\textit{HREM study of compounds in the Bi-rich part of the Ba-Bi-O system}{\textquotedblright}. Nikolaichik VI, Amelinckx S, Klinkova LA, Barkovskii NV, Lebedev OI, Van Tendeloo G, Journal of solid state chemistry \textbf{163}, 44 (2002).   http://doi.org/10.1006/jssc.2001.9362

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