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\bibitem{Markowicz_etal1986} {\textquotedblleft}\textit{Absorption correction in electron probe x-ray microanalysis of thin samples}{\textquotedblright}. Markowicz AA, Storms HM, Van Grieken RE, Analytical chemistry \textbf{58}, 1282 (1986).   http://doi.org/10.1021/AC00298A003

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