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\bibitem{Stigter_etal1998} Stigter, T. Y., van Ooijen, S. P. J., Post, V. E. A., Appelo, C. A. J., \& Carvalho Dill, A. M. M. (1998). A hydrogeological and hydrochemical explanation of the groundwater composition under irrigated land in a Mediterranean environment, Algarve, Portugal. \textit{Journal of Hydrology}, \textit{208}(3), 262--279.

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