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\bibitem{Ilin_etal1998} Il{\textquoteright}in KS, Cherednichenko SI, Gol{\textquoteright}tsman GN, Currie M, Sobolewski R. Comparative study of the bandwidth of phonon-cooled NbN hot-electron bolometers in submillimeter and optical wavelength ranges. In: Proc. 9$^{th}$ Int. Symp. Space Terahertz Technol.; 1998. p. 323--30.

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