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\bibitem{Beche_etal2011} {\textquotedblleft}\textit{Dark field electron holography for strain measurement}{\textquotedblright}. B{\'e}ch{\'e} A, Rouvi{\`e}re JL, Barnes JP, Cooper D, Ultramicroscopy \textbf{111}, 227 (2011).   http://doi.org/10.1016/J.ULTRAMIC.2010.11.030

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