TY - JOUR AU - Gu, Dazhen AU - Randa, James AU - Billinger, Robert AU - Walker, Dave C2 - Radio Science DA - 2013-05-01 LA - en M1 - 48 PB - Radio Science PY - 2013 TI - Measurement and uncertainty analysis of a cryogenic low-noise amplifier with noise temperature below 2 K ER -