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\bibitem{Janssens_etal2006} {\textquotedblleft}\textit{Colloquium Spectroscopicum Internationale 34, Antwerp, Belgium, 4-9 September 2005: preface}{\textquotedblright}. Janssens K, Bogaerts A, van Grieken R, Talanta : the international journal of pure and applied analytical chemistry \textbf{70}, 907 (2006).   http://doi.org/10.1016/j.talanta.2006.05.044

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