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\bibitem{Neyts+Bogaerts2014} {\textquotedblleft}\textit{Ion irradiation for improved graphene network formation in carbon nanotube growth}{\textquotedblright}. Neyts EC, Bogaerts A, Carbon \textbf{77}, 790 (2014).   http://doi.org/10.1016/j.carbon.2014.05.083

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