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\bibitem{Bugani_etal2007} {\textquotedblleft}\textit{Investigation on porosity changes of Lecce stone due to conservation treatments by means of x-ray nano- and improved micro-computed tomography: preliminary results}{\textquotedblright}. Bugani S, Camaiti M, Morselli L, Van de Casteele E, Janssens K, X-ray spectrometry \textbf{36}, 316 (2007).   http://doi.org/10.1002/XRS.976

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