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\bibitem{vanCleempoel_etal1998} {\textquotedblleft}\textit{Aerosol synthesis and characterization of ultrafine fullerene particles}{\textquotedblright}. van Cleempoel A, Joutsensaari J, Kauppinen E, Gijbels R, Claeys M, Fullerene science and technology \textbf{6}, 599 (1998).   http://doi.org/10.1080/10641229809350223

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