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\bibitem{deMaeyer-Worobiec_etal2009} {\textquotedblleft}\textit{EPXMA survey of shelf sediments (Southern Bight, North Sea): a glance beyond the XRD-invisible}{\textquotedblright}. de Maeyer-Worobiec A, Dekov VM, Laane RWPM, Van Grieken R, Microchemical journal \textbf{91}, 21 (2009).   http://doi.org/10.1016/J.MICROC.2008.07.001

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