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\bibitem{VanWinckel_etal2019} {\textquotedblleft}\textit{Overcoming floc formation limitations in high-rate activated sludge systems}{\textquotedblright}. Van Winckel T, Liu X, Vlaeminck SE, Tak{\'a}cs I, Al-Omari A, Sturm B, Kjellerup BV, Murthy SN, De Clippeleir H, Chemosphere \textbf{215}, 342 (2019).   http://doi.org/10.1016/J.CHEMOSPHERE.2018.09.169

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