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\bibitem{Liu_etal2018} {\textquotedblleft}\textit{Modeling electron competition among nitrogen oxides reduction and N$_{2}$Oaccumulation in hydrogenotrophic denitrification}{\textquotedblright}. Liu Y, Ngo HH, Guo W, Peng L, Chen X, Wang D, Pan Y, Ni B-J, Biotechnology and bioengineering \textbf{115}, 978 (2018).   http://doi.org/10.1002/BIT.26512

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