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\bibitem{Bertels_etal2014} {\textquotedblleft}\textit{Highly Efficient Hyperbranched CNT Surfactants: Influence of Molar Mass and Functionalization}{\textquotedblright}. Bertels E, Bruyninckx K, Kurttepeli, Smet M, Bals S, Goderis B, Langmuir: the ACS journal of surfaces and colloids \textbf{30}, 12200 (2014).   http://doi.org/10.1021/la503032g

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