PT Unknown AU Ryabchun, SA Tretyakov, IV Finkel, MI Maslennikov, SN Kaurova, NS Seleznev, VA Voronov, BM Gol'tsman, GN TI NbN phonon-cooled hot-electron bolometer mixer with additional diffusion cooling SE Proc. 20[super:th] Int. Symp. Space Terahertz Technol. PY 2009 BP 151 EP 154 DE HEB; mixer; bandwidth; noise temperatue; in-situ contacts; in situ contacts PI Charlottesville, USA ER