PT Unknown AU Verevkin, AA Ptitsina, NG Smirnov, KV Gol'tsman, GN Voronov, BM Gershenzon, EM Yngvesson, KS TI Hot electron bolometer detectors and mixers based on a superconducting-two-dimensional electron gas-superconductor structure SE Proc. 4-th Int. Semicond. Device Research Symp. PY 1997 BP 163 EP 166 DE S-2DEG-S HEB mixers; detectors; AlGaAs/GaAs heterostructures; NbN ER