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\bibitem{Bollen_etal2021} {\textquotedblleft}\textit{A database system for querying of river networks : facilitating monitoring and prediction applications}{\textquotedblright}. Bollen E, Pagan BR, Kuijpers B, Van Hoey S, Desmet N, Hendrix R, Dams J, Seuntjens P, Water Science And Technology-Water Supply  (2021).   http://doi.org/10.2166/WS.2021.433

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