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\bibitem{Seuntjens_etal2018} {\textquotedblleft}\textit{Synergistic exposure of return-sludge to anaerobic starvation, sulfide and free ammonia to suppress nitrite oxidizing bacteria}{\textquotedblright}. Seuntjens D, Van Tendeloo M, Chatzigiannidou I, Carvajal-Arroyo JM, Vandendriessche S, Vlaeminck SE, Boon N, Environmental science and technology \textbf{52}, 8725 (2018).   http://doi.org/10.1021/ACS.EST.7B06591

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