TY - JOUR AU - Peter Lowell AU - Galen O'Neil AU - Jason Underwood AU - Xiaohang AU - Joel Ullom C2 - Journal of Low Temperature Physics DA - 2013-12-15 DO - https://doi.org/10.1007/s10909-013-1009-0 LA - en PB - Journal of Low Temperature Physics PY - 2013 TI - Sub-100 mK cooling using normal-metal¿insulator¿superconductor tunnel junctions ER -