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\bibitem{Samek_etal2002} {\textquotedblleft}\textit{Performance of a new compact EDXRF spectrometer for aerosol analysis}{\textquotedblright}. Samek L, Injuk J, van Espen P, Van Grieken R, X-ray spectrometry \textbf{31}, 84 (2002).   http://doi.org/10.1002/XRS.551

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