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\bibitem{Sfez_etal2019} {\textquotedblleft}\textit{Improving the resource footprint evaluation of products recovered from wastewater : a discussion on appropriate allocation in the context of circular economy}{\textquotedblright}. Sfez S, De Meester S, Vlaeminck SE, Dewulf J, Resources, conservation and recycling \textbf{148}, 132 (2019).   http://doi.org/10.1016/J.RESCONREC.2019.03.029

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