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\bibitem{Neyts_etal2013} {\textquotedblleft}\textit{Defect healing and enhanced nucleation of carbon nanotubes by low-energy ion bombardment}{\textquotedblright}. Neyts EC, Ostrikov K, Han ZJ, Kumar S, van Duin ACT, Bogaerts A, Physical review letters \textbf{110}, 065501 (2013).   http://doi.org/10.1103/PhysRevLett.110.065501

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