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\bibitem{Meerburg_etal2016} {\textquotedblleft}\textit{High-rate activated sludge communities have a distinctly different structure compared to low-rate sludge communities, and are less sensitive towards environmental and operational variables}{\textquotedblright}. Meerburg FA, Vlaeminck SE, Roume H, Seuntjens D, Pieper DH, Jauregui R, Vilchez-Vargas R, Boon N, Water research \textbf{100}, 137 (2016).   http://doi.org/10.1016/J.WATRES.2016.04.076

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