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\bibitem{Beck_etal2015} Beck, M., Klammer, M., Rousseau, I., Gol{\textquoteright}tsman, G. N., Diamant, I., Dagan, Y., et al. (2015). Probing superconducting gap dynamics with THz pulses. In \textit{CLEO} (SM3H.3 (1 to 2)). Optical Society of America.

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