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\bibitem{Nebosis_etal1993} Nebosis, R. S., Heusinger, M. A., Semenov, A. D., Lang, P. T., Schatz, W., Steinke, R., et al. (1993). Ultrafast photoresponse of an YBa$_{2}$Cu$_{3}$O$_{7-δ}$ film to far-infrared radiation pulses. \textit{Opt. Lett.}, \textit{18}(2), 96--97.

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