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\bibitem{Vandekerckhove_etal2018} {\textquotedblleft}\textit{Temperature impact on sludge yield, settleability and kinetics of three heterotrophic conversions corroborates the prospect of thermophilic biological nitrogen removal}{\textquotedblright}. Vandekerckhove TGL, De Mulder C, Boon N, Vlaeminck SE, Bioresource technology \textbf{269}, 104 (2018).   http://doi.org/10.1016/J.BIORTECH.2018.08.012

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