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\bibitem{Swaenen_etal2010} {\textquotedblleft}\textit{Investigation of inclusions trapped inside Libyan desert glass by Raman microscopy}{\textquotedblright}. Swaenen M, Stefaniak EA, Frost R, Worobiec A, Van Grieken R, Analytical and bioanalytical chemistry \textbf{397}, 2659 (2010).   http://doi.org/10.1007/S00216-009-3351-2

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