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\bibitem{Kuczumow_etal2001} {\textquotedblleft}\textit{Analysis of speleothems by electron and X-ray microprobes}{\textquotedblright}. Kuczumow A, Vekemans B, Schalm O, Gysels K, Ro C-U, Van Grieken R, Journal of analytical atomic spectrometry \textbf{16}, 90 (2001).   http://doi.org/10.1039/B007725I

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