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\bibitem{Worobiec_etal2005} {\textquotedblleft}\textit{Ruthenium staining as an alternative preparation method for automated EPMA of individual biogenic and organic particles}{\textquotedblright}. Worobiec A, Kaplinski A, Van Grieken R, X-ray spectrometry \textbf{34}, 245 (2005).   http://doi.org/10.1002/XRS.807

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