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\bibitem{Danerud_etal1993} Danerud, M., Winkler, D., Zorin, M., Trifonov, V., Karasik, B., Gershenzon, E. M., et al. (1993). Picosecond detection of infrared radiation with YBa$_{2}$Cu$_{3}$O$_{7-δ}$ thin films. In J. R. Birch, \& T. J. Parker (Eds.), \textit{Proc. SPIE} (Vol. 2104, pp. 183--184). Spie.

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