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\bibitem{DeVrieze_etal2016} {\textquotedblleft}\textit{Thermophilic sludge digestion improves energy balance and nutrient recovery potential in full-scale municipal wastewater treatment plants}{\textquotedblright}. De Vrieze J, Smet D, Klok J, Colsen J, Angenent LT, Vlaeminck SE, Bioresource technology \textbf{218}, 1237 (2016).   http://doi.org/10.1016/J.BIORTECH.2016.06.119

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