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\bibitem{Tit_etal2017} {\textquotedblleft}\textit{Detection of CO2 using CNT-based sensors: Role of Fe catalyst on sensitivity and selectivity}{\textquotedblright}. Tit N, Al Ezzi MM, Abdullah HM, Yusupov M, Kouser S, Bahlouli H, Yamani ZH, Materials chemistry and physics \textbf{186}, 353 (2017).   http://doi.org/10.1016/J.MATCHEMPHYS.2016.11.006

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