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\bibitem{Bogaerts+Gijbels1999} {\textquotedblleft}\textit{New developments and applications in GDMS}{\textquotedblright}. Bogaerts A, Gijbels R, Fresenius{\textquoteright} journal of analytical chemistry \textbf{364}, 367 (1999).   http://doi.org/10.1007/s002160051352

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