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\bibitem{Verberck_etal2006} {\textquotedblleft}\textit{The C$_{60}$ molecules in (C$_{60}$)$_{N}$@SWCNT peapods: crystal field, intermolecular interactions and dynamics}{\textquotedblright}. Verberck B, Michel KH, Nikolaev AV, Fullerenes, nanotubes, and carbon nanostructures \textbf{14}, 171 (2006).   http://doi.org/10.1080/15363830600663529

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