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\bibitem{Potgieter-Vermaak+VanGrieken2006} {\textquotedblleft}\textit{Preliminary evaluation of micro-Raman spectrometry for the characterization of individual aerosol particles}{\textquotedblright}. Potgieter-Vermaak SS, Van Grieken R, Applied spectroscopy \textbf{60}, 39 (2006).   http://doi.org/10.1366/000370206775382848

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