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\bibitem{StefanLoeffler_etal2017} {\textquotedblleft}\textit{Real-space mapping of electronic orbitals}{\textquotedblright}. Stefan L{\"o}ffler, Matthieu Bugnet, Nicolas Gauquelin, Sorin Lazar, Elias Assmann, Karsten Held, Gianluigi A Botton, Peter Schattschneider, Ultramicroscopy \textbf{177}, 26 (2017).   http://doi.org/10.1016/j.ultramic.2017.01.018

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