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\bibitem{Mueller_etal2014} M{\"u}ller, M., Alaoui, A., K{\"u}lls, C., Leistert, H., Meusburger, K., Stumpp, C., et al. (2014). Tracking water pathways in steep hillslopes by $\delta$18O depth profiles of soil water. \textit{Journal of hydrology}, \textit{519}, 340--352.

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