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\bibitem{Kampfrath_etal2007} Kampfrath, T., Perfetti, L., von Volkmann, K., Aguirre, C. M., Desjardins, P., Martel, R., et al. (2007). Optical response of single-wall carbon nanotube sheets in the far-infrared spectral range from 1 THz to 40 THz. \textit{Phys. Stat. Sol. (B)}, \textit{244}(11), 3950--3954.

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