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\bibitem{VanDyck+VanGrieken1983} {\textquotedblleft}\textit{Automated matrix-correction of line ratios in energy-dispersive x-ray fluorescence spectrum deconvolution}{\textquotedblright}. Van Dyck P, Van Grieken R, X-ray spectrometry \textbf{12}, 111 (1983).   http://doi.org/10.1002/XRS.1300120306

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