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\bibitem{Pauwels_etal1999} {\textquotedblleft}\textit{Multiply twinned C$_{60}$ and C$_{70}$ nanoparticles}{\textquotedblright}. Pauwels B, Bernaerts D, Amelinckx S, Van Tendeloo G, Joutsensaari J, Kauppinen EI, Journal of crystal growth \textbf{200}, 126 (1999).   http://doi.org/10.1016/S0022-0248(98)01285-8

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