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\bibitem{Schattschneider_etal2009} {\textquotedblleft}\textit{Real space maps of atomic transitions}{\textquotedblright}. Schattschneider P, Verbeeck J, Hamon AL, Ultramicroscopy \textbf{109}, 781 (2009).   http://doi.org/10.1016/j.ultramic.2009.01.016

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