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\bibitem{Gijbels+Bogaerts1997} {\textquotedblleft}\textit{Recent trends in solids mass spectrometry: GDMS and other methods}{\textquotedblright}. Gijbels R, Bogaerts A, Fresenius{\textquoteright} journal of analytical chemistry \textbf{359}, 326 (1997).   http://doi.org/10.1007/s002160050581

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