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\bibitem{Verevkin_etal2001} Verevkin, A., Xu, Y., Zheng, X., Williams, C., Sobolewski, R., Okunev, O., et al. (2001). Superconducting NbN-based ultrafast hot-electron single-photon detector for infrared range. In \textit{Proc. 12$^{th}$ Int. Symp. Space Terahertz Technol.} (pp. 462--468).

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