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\bibitem{Kuczumow_etal2000} {\textquotedblleft}\textit{Critical assessment and proposal for reconstruction of a grazing emission X-ray fluorescence instrument}{\textquotedblright}. Kuczumow A, Schmeling M, Van Grieken R, Journal of analytical atomic spectrometry \textbf{15}, 535 (2000).   http://doi.org/10.1039/A908661G

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