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\bibitem{Bittencourt_etal2012} {\textquotedblleft}\textit{Towards atomic resolution in sodium titanate nanotubes using near-edge X-ray-absorption fine-structure spectromicroscopy combined with multichannel multiple-scattering calculations}{\textquotedblright}. Bittencourt C, Kr{\"u}ger P, Lagos MJ, Ke X, Van Tendeloo G, Ewels C, Umek P, Guttmann P, Beilstein journal of nanotechnology \textbf{3}, 789 (2012).   http://doi.org/10.3762/bjnano.3.88

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