TY - JOUR AU - Leonardo Ranzani AU - Lafe Spietz AU - Jose Aumentado C2 - Applied Physics Letters DA - 2013-07-09 DO - https://doi.org/10.1063/1.48135 LA - en PB - Applied Physics Letters PY - 2013 TI - Broadband S-parameter characterization of a DC-SQUID amplifier ER -