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\bibitem{Blommaerts_etal2017} {\textquotedblleft}\textit{Gas phase photocatalytic spiral reactor for fast and efficient pollutant degradation}{\textquotedblright}. Blommaerts N, Asapu R, Claes N, Bals S, Lenaerts S, Verbruggen SW, Chemical engineering journal \textbf{316}, 850 (2017).   http://doi.org/10.1016/j.cej.2017.02.038

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