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\bibitem{Janssens_etal2006} {\textquotedblleft}\textit{Colloquium Spectroscopicum Internationale 34: a collection of papers presented at the Colloquium Spectroscopicum Internationale, Antwerp, Belgium, 4-9 September 2005}{\textquotedblright}. Janssens K, Bogaerts A, van Grieken R Elsevier, Amsterdam (2006).

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