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\bibitem{Biermans_etal2010} {\textquotedblleft}\textit{Measuring porosity at the nanoscale by quantitative electron tomography}{\textquotedblright}. Biermans E, Molina L, Batenburg KJ, Bals S, Van Tendeloo G, Nano letters \textbf{10}, 5014 (2010).   http://doi.org/10.1021/nl103172r

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