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\bibitem{Pinheiro+Abakumov2015} {\textquotedblleft}\textit{Superspace crystallography : a key to the chemistry and properties}{\textquotedblright}. Pinheiro CB, Abakumov AM, IUCrJ \textbf{2}, 137 (2015).   http://doi.org/10.1107/S2052252514023550

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