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\bibitem{vanMalderen_etal2001} {\textquotedblleft}\textit{Individual particle characterization of Siberian aerosols by micro-PIXE and backscattering spectrometry}{\textquotedblright}. van Malderen H, Hoornaert S, Injuk J, Przybylowicz WJ, Pineda CA, Prozesky VM, Van Grieken R, X-ray spectrometry \textbf{30}, 320 (2001).   http://doi.org/10.1002/XRS.505

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