Krause S, Mityashkin V, Antipov S, Gol'tsman G, Meledin D, Desmaris V, et al. Study of IF bandwidth of NbN hot electron bolometers on GaN buffer layer using a direct measurement method. In: Proc. 27<sup>th</sup> Int. Symp. Space Terahertz Technol.; 2016. p. 30&ndash;2.