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\bibitem{Dikaiakos_etal1990} Dikaiakos, J. G., Tsitouris, C. G., Siskos, P. A., Melissos, D. A., \& Nastos, P. (1990). Rainwater composition in Athens, Greece. \textit{Atmospheric Environment. Part B. Urban Atmosphere}, \textit{24}(1), 171--176.

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