PT Unknown AU Yagoubov, P Hübers, H Gol’tsman, G Semenov, A Gao, J Hoogeveen, R de Graauw, T Birk, M Selig, A de Korte, P TI Hot-electron bolometer mixers - technology for far-infrared heterodyne instruments in future atmospheric chemistry missions SE Proc. 3rd Int. Symp. Submillimeter Wave Earth Observation From Space PY 2001 BP 57 EP 69 DE HEB mixers ER