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\bibitem{Horemans_etal2011} {\textquotedblleft}\textit{Evaluation of airborne particles at the Alhambra monument in Granada, Spain}{\textquotedblright}. Horemans B, Cardell C, Bencs L, Kontozova-Deutsch V, De Wael K, Van Grieken R, Microchemical journal \textbf{99}, 429 (2011).   http://doi.org/10.1016/J.MICROC.2011.06.018

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