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\bibitem{Macke_etal2014} {\textquotedblleft}\textit{Element Specific Monolayer Depth Profiling}{\textquotedblright}. Macke S, Radi A, Hamann-Borrero JE, Verna A, Bluschke M, Br{\"u}ck S, Goering E, Sutarto R, He F, Cristiani G, Wu M, Benckiser E, Habermeier H-U, Logvenov G, Gauquelin N, Botton GA, Kajdos AP, Stemmer S, Sawatzky GA, Haverkort MW, Keimer B, Hinkov V, Advanced Materials \textbf{26}, 6554 (2014).   http://doi.org/10.1002/adma.201402028

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