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\bibitem{Verbueken+VanGrieken1981} {\textquotedblleft}\textit{Influence on photoplate evaluation parameters in spark source mass spectrometric analysis}{\textquotedblright}. Verbueken A, Van Grieken R, Bulletin des soci{\'e}t{\'e}s chimiques belges \textbf{90}, 331 (1981)

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