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\bibitem{Launois_etal2010} {\textquotedblleft}\textit{Transformation of C$_{70}$ peapods into double walled carbon nanotubes}{\textquotedblright}. Launois P, Chorro M, Verberck B, Albouy P-A, Rouzi{\`e}re S, Colson D, Forget A, No{\'e} L, Kataura H, Monthioux M, Cambedouzou J, Carbon \textbf{48}, 89 (2010).   http://doi.org/10.1016/j.carbon.2009.08.035

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