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\bibitem{CabalRodriguez_etal2012} {\textquotedblleft}\textit{Possibilities of energy-resolved X-ray radiography for the investigation of paintings}{\textquotedblright}. Cabal Rodr{\'\i}guez AE, Leyva Pernia D, Schalm O, van Espen PJM, Analytical and bioanalytical chemistry \textbf{402}, 1471 (2012).   http://doi.org/10.1007/S00216-011-5230-X

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