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\bibitem{VanDyck+VanGrieken1980} {\textquotedblleft}\textit{Absorption correction via scattered radiation in energy-dispersive X-ray fluorescence analysis for samples of variable composition and thickness}{\textquotedblright}. Van Dyck PM, Van Grieken RE, Analytical chemistry \textbf{52}, 1859 (1980).   http://doi.org/10.1021/AC50062A020

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