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\bibitem{Niessner_etal1985} {\textquotedblleft}\textit{Investigation of heterogeneous reactions of PAH{\textquoteright}s on particle surfaces using laser microprobe mass analysis}{\textquotedblright}. Niessner R, Klockow D, Bruynseels F, Van Grieken R, International journal of environmental analytical chemistry \textbf{22}, 281 (1985).   http://doi.org/10.1080/03067318508076427

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